Which of the following statements are true// false
A. In Torpedo the electric organs are capable of generating strong strong electric shock to paralyze the prey
B. Bony fishes use pectoral, pelvic, dorsal, anal and caudal fins in swimming
C. Amphibians skin is moist and has thick scales
D. Birds are poikilothermous animals
E. The most unique mammalian characteristic is the presence of milk producing mammary glands by which the young ones are nourished

Options

A. a , b and c are true , d and e are false
B. a, b and e are true , c and d are false
C. a ,d and e are true , b and c are false
D. a , b and d are false , c and e are true

Answer

To determine the truthfulness of each statement regarding various animal characteristics, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A:** "In Torpedo, the electric organs are capable of generating strong electric shock to paralyze the prey."
- **Analysis:** This statement is true. The Torpedo, also known as the electric ray, has specialized electric organs that can produce electric discharges strong enough to paralyze prey.

2. **Statement B:** "Bony fishes use pectoral, pelvic, dorsal, anal and caudal fins in swimming."
- **Analysis:** This statement is true. Bony fishes indeed utilize various fins including pectoral, pelvic, dorsal, anal, and caudal fins for swimming.

3. **Statement C:** "Amphibians' skin is moist and has thick scales."
- **Analysis:** This statement is false. Amphibians typically have moist skin, but they do not have scales; instead, they have smooth skin that helps in respiration and moisture retention.

4. **Statement D:** "Birds are poikilothermous animals."
- **Analysis:** This statement is false. Birds are homeothermous (or endothermic), meaning they can maintain a constant body temperature regardless of the environment.

5. **Statement E:** "The most unique mammalian characteristic is the presence of milk-producing mammary glands by which the young ones are nourished."
- **Analysis:** This statement is true. One of the defining characteristics of mammals is the presence of mammary glands that produce milk to nourish their young.

### Summary of Truthfulness:
- **True Statements:** A, B, E
- **False Statements:** C, D

### Final Answer:
- A: True
- B: True
- C: False
- D: False
- E: True