Given below are some general characters of a chordate .
(A) skin is dry without glands, except oil gland at the base of the tail.
(B) warm-blooded (homeothermic) animal.
(C) The heart is completely four-chambered with right systemic arch.
(D) The digestive tract has additional chambers , the crop and gizzard .
Identify the animal on the basis of these characters.
Given below are some general characters of a chordate .
(A) skin is dry without glands, except oil gland at the base of the tail.
(B) warm-blooded (homeothermic) animal.
(C) The heart is completely four-chambered with right systemic arch.
(D) The digestive tract has additional chambers , the crop and gizzard .
Identify the animal on the basis of these characters.
(A) skin is dry without glands, except oil gland at the base of the tail.
(B) warm-blooded (homeothermic) animal.
(C) The heart is completely four-chambered with right systemic arch.
(D) The digestive tract has additional chambers , the crop and gizzard .
Identify the animal on the basis of these characters.
A
Ichthyophis
B
Crocodilus
C
Columba
D
Macropus
Text Solution
AI Generated Solution
The correct Answer is:
To identify the animal based on the given characteristics, let's analyze each point step by step:
1. **Skin Characteristics**:
- The skin is described as dry without glands, except for oil glands at the base of the tail. This feature is typical of birds, which have feathers and a dry skin surface.
**Hint**: Think about animals with dry skin and minimal glandular presence, particularly in relation to feathers.
2. **Body Temperature Regulation**:
- The animal is warm-blooded (homeothermic). This characteristic is also typical of birds and mammals, as they can maintain a constant body temperature regardless of the environment.
**Hint**: Consider which classes of animals are known for being warm-blooded.
3. **Heart Structure**:
- The heart is completely four-chambered with a right systemic arch. This is a defining characteristic of birds and mammals, as they have a fully divided heart that separates oxygenated and deoxygenated blood.
**Hint**: Recall the heart structure differences among various animal classes.
4. **Digestive System**:
- The digestive tract has additional chambers, specifically the crop and gizzard. This feature is characteristic of birds, as they have specialized digestive structures to aid in processing food.
**Hint**: Think about which animals have a crop and gizzard as part of their digestive system.
Based on the analysis of these characteristics, we can conclude that the animal described is a bird. Among the options provided:
- A. Thiopis (not a bird)
- B. Crocodilis (not a bird)
- C. Columba (Pigeon)
- D. Macropis (not a bird)
The correct answer is **C. Columba**.
**Final Answer**: C. Columba (Pigeon)
Topper's Solved these Questions
Similar Questions
Explore conceptually related problems
Which one of the following is incorrect for Aves? A Heart is four-chambered and animals are oviparous B The presence of air cavities in bones and the presence of feathers on the body С Digestive tract has additional chambers and animals are homeothermal D The forelimbs are not modified into wings
Select the set of correct statement for given figure :- (A) Oil gland present at the base of tail. (B) Crop and gizzard are present in digestive tract. (C) It is cold blooded animal (D) Air sacs connect to lungs to supplement the respiration.
Read the passage given below and answer the question: Biopolymers are polymers that are generated from renewable natural sources, are often biodegradable and nontoxic. They can be produced by biological systems (i.e. microorganisms, plants and animals), or chemically synthesized from biological materials (e.g., sugars, starch, natural fats or oils, etc.). Two strategies are applied in converting these raw materials into biodegradable polymers: extraction of the native polymer from a plant or animal tissue, and a chemical or biotechnological route of monomer polymerization. Biodegradable biopolymers (BDP) are an alternative to petroleum-based polymers (traditional plastics). Some BDP degrade in only a few weeks, while the degradation of others takes several months. In principle the properties relevant for application as well as biodegradability are determined by the molecular structure. According to the American Society for Testing and Materials, biopolymers are degradable polymers in which degradation results from the action of naturally occurring microorganisms such as bacteria, fungi and algae. Polylactic acid (PLA) is an example of biopolymer. It is a thermoplastic polyester. Generally, there are two major routes to produce polylactic acid from the lactic acid ( CH_(3)CH(OH) COOH ) monomer. The first route involves condensation-water removal by the use of solvent under high vacuum and temperature. This approach produces a low to intermediate molar mass polymer. An alternative method is to remove water under milder conditions, without solvent, to produce a cyclic intermediate dimer, referred to as lactide. This intermediate is readily purified by vacuum distillation. Ring opening polymerization of the dimer is accomplished under heat, again without the need for solvent. By controlling the purity of the dimer it is possible to produce a wide range of molar masses .PLA is a good material for production of clothing, carpet tiles, interior and outdoor furnishing, geotextiles, bags, filtration systems, etc. The primary biodegradability of PLA was tested using hydrolysis tests at various composting temperatures and pH. It was demonstrated that composting is a useful method for PLA biodegradation. The degradation rate is very slow in ambient temperatures. A 2017 study found that at 25^(@)C in sea water, PLA showed no degradation over a year. As a result, it is poorly degraded in landfills and household composts, but is effectively digested in hotter industrial composts. (source: Flieger, M., Kantorová, M., Prell, A., Rezanka, T., & Votruba, J. (2003). Biodegradable plastics from renewable sources. Folia Microbiologica, 48(1), 27 44. doi:10.1007/bf02931273) In the question, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: Biodegradable polymers degrade in few weeks. Reason: Microorganisms bring about degradation of biopolymers.
Read the passage given below and answer the question: Biopolymers are polymers that are generated from renewable natural sources, are often biodegradable and nontoxic. They can be produced by biological systems (i.e. microorganisms, plants and animals), or chemically synthesized from biological materials (e.g., sugars, starch, natural fats or oils, etc.). Two strategies are applied in converting these raw materials into biodegradable polymers: extraction of the native polymer from a plant or animal tissue, and a chemical or biotechnological route of monomer polymerization. Biodegradable biopolymers (BDP) are an alternative to petroleum-based polymers (traditional plastics). Some BDP degrade in only a few weeks, while the degradation of others takes several months. In principle the properties relevant for application as well as biodegradability are determined by the molecular structure. According to the American Society for Testing and Materials, biopolymers are degradable polymers in which degradation results from the action of naturally occurring microorganisms such as bacteria, fungi and algae. Polylactic acid (PLA) is an example of biopolymer. It is a thermoplastic polyester. Generally, there are two major routes to produce polylactic acid from the lactic acid (CH_(3)CH(OH) COOH) monomer. The first route involves condensation-water removal by the use of solvent under high vacuum and temperature. This approach produces a low to intermediate molar mass polymer. An alternative method is to remove water under milder conditions, without solvent, to produce a cyclic intermediate dimer, referred to as lactide. This intermediate is readily purified by vacuum distillation. Ring opening polymerization of the dimer is accomplished under heat, again without the need for solvent. By controlling the purity of the dimer it is possible to produce a wide range of molar masses .PLA is a good material for production of clothing, carpet tiles, interior and outdoor furnishing, geotextiles, bags, filtration systems, etc. The primary biodegradability of PLA was tested using hydrolysis tests at various composting temperatures and pH. It was demonstrated that composting is a useful method for PLA biodegradation. The degradation rate is very slow in ambient temperatures. A 2017 study found that at 25^(@)C in sea water, PLA showed no degradation over a year. As a result, it is poorly degraded in landfills and household composts, but is effectively digested in hotter industrial composts. (source: Flieger, M., Kantorová, M., Prell, A., Rezanka, T., & Votruba, J. (2003). Biodegradable plastics from renewable sources. Folia Microbiologica, 48(1), 27 44. doi:10.1007/bf02931273) In the question, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: Lactic acid undergoes condensation polymerisation Reason: Lactic acid is a bifunctional monomeric unit.
Read the passage given below and answer the question: Biopolymers are polymers that are generated from renewable natural sources, are often biodegradable and nontoxic. They can be produced by biological systems (i.e. microorganisms, plants and animals), or chemically synthesized from biological materials (e.g., sugars, starch, natural fats or oils, etc.). Two strategies are applied in converting these raw materials into biodegradable polymers: extraction of the native polymer from a plant or animal tissue, and a chemical or biotechnological route of monomer polymerization. Biodegradable biopolymers (BDP) are an alternative to petroleum-based polymers (traditional plastics). Some BDP degrade in only a few weeks, while the degradation of others takes several months. In principle the properties relevant for application as well as biodegradability are determined by the molecular structure. According to the American Society for Testing and Materials, biopolymers are degradable polymers in which degradation results from the action of naturally occurring microorganisms such as bacteria, fungi and algae. Polylactic acid (PLA) is an example of biopolymer. It is a thermoplastic polyester. Generally, there are two major routes to produce polylactic acid from the lactic acid (CH_(3)CH(OH) COOH) monomer. The first route involves condensation-water removal by the use of solvent under high vacuum and temperature. This approach produces a low to intermediate molar mass polymer. An alternative method is to remove water under milder conditions, without solvent, to produce a cyclic intermediate dimer, referred to as lactide. This intermediate is readily purified by vacuum distillation. Ring opening polymerization of the dimer is accomplished under heat, again without the need for solvent. By controlling the purity of the dimer it is possible to produce a wide range of molar masses .PLA is a good material for production of clothing, carpet tiles, interior and outdoor furnishing, geotextiles, bags, filtration systems, etc. The primary biodegradability of PLA was tested using hydrolysis tests at various composting temperatures and pH. It was demonstrated that composting is a useful method for PLA biodegradation. The degradation rate is very slow in ambient temperatures. A 2017 study found that at 25^(@)C in sea water, PLA showed no degradation over a year. As a result, it is poorly degraded in landfills and household composts, but is effectively digested in hotter industrial composts. (source: Flieger, M., Kantorová, M., Prell, A., Rezanka, T., & Votruba, J. (2003). Biodegradable plastics from renewable sources. Folia Microbiologica, 48(1), 27 44. doi:10.1007/bf02931273) In the question, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: The degradation of PLA is very slow in ambient temperature. Reason: PLA is a thermoplastic.
Read the passage given below and answer the question: Biopolymers are polymers that are generated from renewable natural sources, are often biodegradable and nontoxic. They can be produced by biological systems (i.e. microorganisms, plants and animals), or chemically synthesized from biological materials (e.g., sugars, starch, natural fats or oils, etc.). Two strategies are applied in converting these raw materials into biodegradable polymers: extraction of the native polymer from a plant or animal tissue, and a chemical or biotechnological route of monomer polymerization. Biodegradable biopolymers (BDP) are an alternative to petroleum-based polymers (traditional plastics). Some BDP degrade in only a few weeks, while the degradation of others takes several months. In principle the properties relevant for application as well as biodegradability are determined by the molecular structure. According to the American Society for Testing and Materials, biopolymers are degradable polymers in which degradation results from the action of naturally occurring microorganisms such as bacteria, fungi and algae. Polylactic acid (PLA) is an example of biopolymer. It is a thermoplastic polyester. Generally, there are two major routes to produce polylactic acid from the lactic acid (CH_(3)CH(OH) COOH) monomer. The first route involves condensation-water removal by the use of solvent under high vacuum and temperature. This approach produces a low to intermediate molar mass polymer. An alternative method is to remove water under milder conditions, without solvent, to produce a cyclic intermediate dimer, referred to as lactide. This intermediate is readily purified by vacuum distillation. Ring opening polymerization of the dimer is accomplished under heat, again without the need for solvent. By controlling the purity of the dimer it is possible to produce a wide range of molar masses .PLA is a good material for production of clothing, carpet tiles, interior and outdoor furnishing, geotextiles, bags, filtration systems, etc. The primary biodegradability of PLA was tested using hydrolysis tests at various composting temperatures and pH. It was demonstrated that composting is a useful method for PLA biodegradation. The degradation rate is very slow in ambient temperatures. A 2017 study found that at 25 ^(@)C in sea water, PLA showed no degradation over a year. As a result, it is poorly degraded in landfills and household composts, but is effectively digested in hotter industrial composts. (source: Flieger, M., Kantorová, M., Prell, A., Rezanka, T., & Votruba, J. (2003). Biodegradable plastics from renewable sources. Folia Microbiologica, 48(1), 27 44. doi:10.1007/bf02931273) In the question, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: PLA is poorly degraded in landfills. Reason: The degradation rate of PLA is very slow in ambient temperatures.
NTA MOCK TESTS-NTA NEET SET 71-BIOLOGY
- Antigeic determinant site binds to which portion of an antibody molecu...
Text Solution
|
- Foetal ejection reflex in human female is induced by
Text Solution
|
- Kindey stones are produced due to deposition of uric acid and
Text Solution
|
- Alexander von Humboldt gave the relationship between the species richn...
Text Solution
|
- Zero growth means :
Text Solution
|
- Match the biological molecule listed under column I with their biologi...
Text Solution
|
- With respect to RFLP , arrange the following sentences in order . I....
Text Solution
|
- The cytoskeletal elements are involved in : (i) Amoeboid movement ...
Text Solution
|
- Given below are some general characters of a chordate . (A) skin is...
Text Solution
|
- The vascular cambium of dicot root originates from the
Text Solution
|
- A plant in which sporophytic generation is represented by zygote only
Text Solution
|
- How does pruning help in making the hedge dense ?
Text Solution
|
- The figures below shows three steps (A,B,C) of polymerase chain reacti...
Text Solution
|
- Neurohypophysis secretes the
Text Solution
|
- Which pair of the following belongs to Basidiomycetes ?
Text Solution
|
- The possible beneficial aspect of grazing animals is the
Text Solution
|
- Which of the following is correct ?
Text Solution
|
- The cilia in Paramecium are
Text Solution
|
- The joint of radio-ulna with the upper arm is called a
Text Solution
|
- Identify the correct Statement with respect to secondary growth in di...
Text Solution
|