Home
Class 12
BIOLOGY
Which one is a phòsiological adaptation ...

Which one is a phòsiological adaptation to cold climate?
I. Small body
II. Accumulating glycerol and antifreezing proteins
III. Accumulating ice nucleating protein
IV. Hibernation

A

Only I

B

I, II, III

C

II, III

D

I,II,III,IV

Text Solution

AI Generated Solution

The correct Answer is:
To determine which option represents a physiological adaptation to cold climates, we will analyze each option one by one. ### Step-by-Step Solution: 1. **Understanding Physiological Adaptation**: - Physiological adaptations are internal processes that help organisms survive in their environment. These adaptations involve changes in the body functions or biochemical processes. 2. **Analyzing Option I - Small Body**: - A small body size is generally considered a morphological adaptation rather than a physiological one. It may help in reducing heat loss, but it does not involve internal physiological processes. 3. **Analyzing Option II - Accumulating Glycerol and Antifreezing Proteins**: - Accumulating glycerol and antifreezing proteins (AFP) is indeed a physiological adaptation. These substances help prevent ice crystal formation within cells, allowing organisms to survive in sub-zero temperatures. 4. **Analyzing Option III - Accumulating Ice Nucleating Protein**: - Ice nucleating proteins (INP) also represent a physiological adaptation. They help control ice formation in the body, preventing damage from ice crystals. This is another internal process that aids survival in cold climates. 5. **Analyzing Option IV - Hibernation**: - Hibernation is a behavioral adaptation, not a physiological one. It involves changes in behavior to cope with cold temperatures, such as entering a state of dormancy. 6. **Conclusion**: - Based on the analysis, options II (Accumulating glycerol and antifreezing proteins) and III (Accumulating ice nucleating protein) are both physiological adaptations to cold climates. However, since the question asks for one, the best answer is option II, as it is more commonly recognized as a physiological adaptation. ### Final Answer: **II. Accumulating glycerol and antifreezing proteins**
Promotional Banner

Similar Questions

Explore conceptually related problems

Chromatin is constituted with I. DNA II. Histones III. Non-histone proteins IV. RNA

Which of the following is/are function(s) of liposchondria? (I) Chemical modification of lipids and proteins (II) Detoxification (III) Formation of acrosome (IV) Glycogen synthesis & breakdown

Which of the following is correct about neodarwinism ? I. Neo-darwinism distinguished between germplasm and somatoplasm. II. Neo-darwinism explains that adaptations result from mutiple forces and natural selection is one of them. III Variations accumulate in indivduals. IV Accepted the inheritance of acquired characters.

Which of these are false statements about calcium ? I. It is required during the formation of the cell wall. II. It accumulates in younger leaves. III. Spindle fibers can't be formed with it. IV. It is absolutely necessary for the synthesis of auxins.

Which of the following statements is not correct regarding biomagnification ? (i) Mercury accumulated by an organism cannot be metabolised. (ii) In the process of biomagnification, concentration of DDT is increased at successive trophic levels. (iii) Accumulation of cadmimu can cause thinning of egg shell in birds. (iv) DDT accumulation is a major cause of reduced population of fish eating birds. (v) Biomagnification occurs only in aquatic food chain.

Observe figure and answer the following questions. (i) The ecological term used to describe the DDT accumulation at different troohic levels ? (ii) List any one effect of DDT accumulation on birds. (iii) Will DDT accumulation lead to eutrophication ? (iv) Does it affect the BOD? (v) Name disease caused by accumulation of any heavy metal.