| List-I (Types of adaptation) | List-II (Examples) | ||
| 1 | Biochemical adaptation | p | Desert lizards |
| 2 | Behavioural adaptation | q | Deep sea fishes |
| 3 | Physiological adaptation | r | Opuntia |
| 4 | Morphological adaptation | s | Kangaroo rats |
Adaptations enable organisms to thrive in diverse environmental conditions.
Matching adaptations with examples:
1. Biochemical adaptation - q. Deep sea fishes: Produce antifreeze proteins to survive cold depths.
2. Behavioral adaptation - p. Desert lizards: Bask in sun to regulate body temperature.
3. Physiological adaptation - s. Kangaroo rats: Concentrated urine minimizes water loss.
4. Morphological adaptation - r. Opuntia: Spines (modified leaves) reduce water loss.
The correct matching is: (C) 1-q, 2-p, 3-s, 4-r
Other options are incorrect because: - (A) Mismatches behavioral and morphological adaptations - (B) Incorrectly links all adaptation types - (D) Reverses physiological and biochemical examples
Biochemical adaptation: This involves changes at the molecular level, such as enzyme adaptations in organisms to survive extreme conditions. For example, desert lizards have enzymes suited to high temperatures.
1 - q (Deep sea fishes).
Behavioral adaptation: Changes in the behavior of organisms to survive in their environment, such as migration patterns or nocturnal activity.
2 - p (Desert lizards).
Physiological adaptation: Changes in an organism’s internal processes, such as cacti storing water.
3 - r (Opuntia).
Morphological adaptation: Physical changes in the structure of an organism to help it survive, such as kangaroo rats evolving to conserve water in deserts.
4 - s (Kangaroo rats).
Thus, the correct matching is 1 - q, 2 - p, 3 - r, 4 - s, which corresponds to Option (C).
ডারউইন কোনটিকে 'প্রকৃতির খেলা' রূপে আখ্যায়িত করেছিলেন?
সমবয়ী অঙ্গের বিবর্তনকে বলা হয়
একটি মৌমাছি কীভাবে শ্রমিক মৌমাছি অন্য শ্রমিক মৌমাছিদের খাদ্য উৎসের বার্তা দেয় ব্যাখ্যা করো। ডারউইনের অভিব্যক্তি সংক্রান্ত তত্ত্বের তিনটি বিষয় ব্যাখ্যা করো — প্রাকৃতিক নির্বাচন, অস্তিত্বের জন্য সংগ্রাম, প্রকরণের উৎপত্তি।
Match the following:
In the following, \( [x] \) denotes the greatest integer less than or equal to \( x \). 
Choose the correct answer from the options given below:
For x < 0:
f(x) = ex + ax
For x ≥ 0:
f(x) = b(x - 1)2