Home
Class 12
BIOLOGY
a. Loss of unnecessary sense organs b....

a. Loss of unnecessary sense organs
b. Pressence of adhesive organs
c. Presence of suckers
d. High reproductive capacity
e. well developed digestive system
Choose correct optioin w.r.t. parasites

A

All a-e are correct

B

Only, a, b, d & e are correct

C

Only a, b,c,d are correct

D

Only d & e are incorrect

Text Solution

AI Generated Solution

The correct Answer is:
To determine the correct options with respect to parasites, we need to analyze each statement provided in the question. ### Step-by-Step Solution: 1. **Loss of unnecessary sense organs (Option a)**: - Parasites often live inside or on their hosts, which means they do not need to interact with the external environment as much as free-living organisms do. Therefore, they tend to lose unnecessary sense organs that are not required for their survival in a host. - **Conclusion**: This statement is correct. 2. **Presence of adhesive organs (Option b)**: - Parasites need to attach themselves to their hosts to feed and survive. Adhesive organs or structures help them to cling to the host's tissues. - **Conclusion**: This statement is correct. 3. **Presence of suckers (Option c)**: - Many parasites, such as certain flatworms, have suckers that allow them to attach firmly to their hosts and draw nutrients from them. - **Conclusion**: This statement is correct. 4. **High reproductive capacity (Option d)**: - Parasites often reproduce in large numbers to ensure that at least some offspring survive despite the challenges they face in their environment. This high reproductive capacity increases their chances of successful transmission to new hosts. - **Conclusion**: This statement is correct. 5. **Well-developed digestive system (Option e)**: - Parasites typically do not require a well-developed digestive system because they absorb nutrients directly from their host. They rely on the host's digestive system to break down food and provide nutrients. - **Conclusion**: This statement is incorrect. ### Final Conclusion: The correct options regarding parasites are **A, B, C, and D**. Option E is incorrect.
Promotional Banner

Topper's Solved these Questions

  • ORGANISMS AND POPULATIONS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION-B) (Objective Type Questions)|35 Videos
  • ORGANISMS AND POPULATIONS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION-C) (Previous Years Questions)|66 Videos
  • ORGANISMS AND POPULATIONS

    AAKASH INSTITUTE ENGLISH|Exercise EXERCISE|30 Videos
  • NEURAL CONTROL AND COORDINATION

    AAKASH INSTITUTE ENGLISH|Exercise Assignment SECTION - D (Assertion-Reason Type Questions )|10 Videos
  • PHOTOSYNTHESIS IN HIGHER PLANTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment(section D)|10 Videos

Similar Questions

Explore conceptually related problems

How many of the following statements are incorrect for parasites (A) Presence of un-necessary sense organs (B) Presence of adhesive organs & suckers (C) Developed digestive system (D) High biotic potential

Read the following statements carefully. A. Studies suggest that first organisms that invaded land were plants. br B. Saltations are large mutations and directionless while Darwinian variations are small and directional. br C. Sauropsids were common ancestors of therapsids and thecodonts. br D. Homo habilis was the first hominid with brain capacity ranging between 650-800 cc. Choose the correct option w.r.t. True (T) and False (F) statements

read the following statements w.r.t. growth in living organisms. (a).In plants growth by cell division occurs continuously throughout their lifespan. (b) growth is a defining property of living organism. (c) cell division occurs in certain tissues to replace lost cells. (d) increase in body mass is considered as growth. (e) in majority of higher animals and plants and in unicellular organisms, growth and reproduction are mutually exclusive events. select the correct option.

Identify the correct statement w.r.t. the given cell A. Concerned with lipid and steroidal hormone synthesis B. Outer non- living rigid structure which gives shape to the cell and protects from mechanical damage and infaction . C. Both lie perpendicular to each other and each has an organisation like the cart wheel . D. Responsible for trapping light energy for the synthesis of sugar. E. Present in cells actively involved in protein synthesis and secretion. F. Spherical structures rich in hydrolytic enzymes.

Metagenesis refers to (a) Presence of different morphile forms (b) Alternation of generations between asexual and sexual phases of an organism (c) Occurrence of drastic changes in form during post embryonic development (d) Presence of a segmented body and parthenogenetic mode of reproduction

(a) Name the organ that produces sperms as well as secretes a hormone in human males. Name the hormone it secretes and write its functions. (b) Name the parts of the human female reproductive system where fertilization occurs. (c) Explain how the developing embryo gets nourishment inside the mother's body.

A : Developments is the emergence of a multicellular organism from a single group of cells R : Development involves growth differentiation and morphogenesis. (a) If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark a (b) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark b (c) If Assertion is true statement but Reason is false then mark c (d) If both Assertion and Reason are false statement then mark d

read the following statements w.r.t. taxonomic aids. (a) monograph contains information of any one taxon. (b) flora provide information for identification of names of various species found in an area. (c) manual gives the actual account of habitat and distribution of various animals of an given area. (d) key contains a set of alternate characters of various plants only. (e) catalogue includes alphabetical arrangement of species of a particular place. select the correct option.

Read the following statements carefully and identify correct statements w.r.t. Lichens a. The association cannot tolerate air pollution, especially due to sulphur dioxide b. Lichens are annuals and their growth is slow c. The fungal partner mostly belongs to ascomycetes. d. Soredia are most efficient means of asexual reproduction e. Orchids seldom occur without this association f. Foliose lichens are pioneers of succession in a water body.

read the statements w.r.t species. (a) on the basis of taxonomic studies, species is the group of individuals with fundamental similarities. (b) each species have distinct morphological characters than other species. (c) species are group of organisms capable of interbreeding and producing fertile offspring. (d) all species with similarities in morphological features are kept in the same genus and assign to same species epithet

AAKASH INSTITUTE ENGLISH-ORGANISMS AND POPULATIONS -ASSIGNMENT (SECTION-A) (Objective Type Questions)
  1. Mango, tuna fish , snow leopards are

    Text Solution

    |

  2. Find out the correct match w.r.t. salinity (in parts per thousand)

    Text Solution

    |

  3. Match Column I with Column II and choose correct option

    Text Solution

    |

  4. Two most important factors influencing the life of organisms are

    Text Solution

    |

  5. Below is the diagramatic represetation of response of organisms agains...

    Text Solution

    |

  6. Smaller animals tend to lose body heat very fast as compared to larger...

    Text Solution

    |

  7. Match Column I with Column II and choose correct option

    Text Solution

    |

  8. Thick cuticle, sunken and scotoactive stomata, CAM photosynthesis and ...

    Text Solution

    |

  9. Warm blooded animals like mammals from colder climates generally have ...

    Text Solution

    |

  10. Natural selection operates at

    Text Solution

    |

  11. Find odd one w.r.t population

    Text Solution

    |

  12. Which of the following contributes an increase in population density ?

    Text Solution

    |

  13. Which of the following is considered as more realistic growth model ?

    Text Solution

    |

  14. In nature habitat has enough resources to support a maximum possible, ...

    Text Solution

    |

  15. Predator play important role in

    Text Solution

    |

  16. Resource partitioning ' is an important mechanism which promotes

    Text Solution

    |

  17. a. Loss of unnecessary sense organs b. Pressence of adhesive organs ...

    Text Solution

    |

  18. Select the incorrect match w.r.t interspecific interaction

    Text Solution

    |

  19. Coamouflage is an important mechanism where

    Text Solution

    |

  20. A J-shaped growth curve depicts

    Text Solution

    |