Zoology Miscellaneous (Biology) (Part-II)

Total Questions: 42

1. Which of the following is a cold-blooded animal? [S.S.C. Online C.P.O.S.I. (T-I) 2.01.2017 (Shift-I)]

Correct Answer: (c) Snake
Solution:Cold-blooded animals, also known as ectothermic animals, are those whose body temperature is regulated by external environmental conditions, rather than internal metabolic processes.

These animals rely on sources like sunlight, warm surfaces, or water to maintain a suitable body temperature common cold-blooded animals:

Reptiles
Snakes
Lizards
Turtles and Tortoises
Crocodiles and Alligators
Geckos

Amphibians
Frogs
Toads
Salamanders
Newts

Fish
Salmon
Trout
Sharks
Goldfish
Tuna

Invertebrates
Insects (e.g., ants, butterflies)
Arachnids (e.g., spiders, scorpions)
Mollusks (e.g., snails, clams)
Crustaceans (e.g., crabs, lobsters)

2. What is the definition for the term ‘hibernation’? [S.S.C. Online Graduate Level (T-I) 10.06.2019 (Shift-III)]

Correct Answer: (c) A state of reduced metabolic activity during winter season among some animals.
Solution:Hibernation is a state of minimal activity and metabolic depression in endotherms (warm-blooded animals).

It's a physiological response to cold weather and lack of food, characterized by lower body temperature, slower breathing, and lower metabolic rate, allowing them to conserve energy.

Examples of animals that hibernate or enter dormancy:

Mammals:
Bears (deep sleep, not true hibernation)
Hedgehogs
Bats
Ground squirrels
Prairie dogs

Reptiles:
Snakes (e.g., garter snakes) undergo brumation (a form of dormancy).

Amphibians:
Frogs
Toads

Insects:
Ladybugs
Caterpillars
Bees

3. Sea-Anemones belong to the phylum— [S.S.C. Online CHSL (T-I) 7.01.2017 (Shift-I)]

Correct Answer: (a) Cnidaria
Solution:Sea anemones are ocean-dwelling members of the phylum Cnidaria.
  • They are invertebrates belonging to the class of Anthozoa.
  • The name Cnidaria (with a silent ‘c’) refers to the cnidae, or nematocysts, that is, the cellular entity of the venom apparatus, which all Cnidarians possess.

The phylum Cnidaria includes

anemones,

  1. corals,
  2. jellyfish (including box jellyfish),
  3. and hydras.

4. What is true about photoperiodism? [C.P.O. S.I. 6.06.2016 (Shift-I)]

Correct Answer: (d) It is a response to the length of day and night of the organisms.
Solution:Photoperiodism is the physiological reaction of organisms to the length of day or night.
  • The term “Photoperiodism” was coined to describe a plant's ability to flower in response to changes in the photoperiod: the relative lengths of day and night.
  • Because flowers produce seeds, flowering is crucially important for the plant to complete its life cycle.

5. Which of the following acids is present in ant bites? [S.S.C. Online Graduate Level (T-I) 11.06.2019 (Shift-I)]

Correct Answer: (a) Formic Acid
Solution:Ant bites and stings from some other insects (like bees) contain formic acid (also known as methanoic acid).
  • This acid is responsible for the burning and stinging sensation associated with these bites.

6. Which of the following is used as anaesthetics? [S.S.C. Online Graduate Level (T-I) 1.09.2016 (Shift-III)]

Correct Answer: (b) N₂O
Solution:N₂O stands for Nitrous Oxide, commonly known as "laughing gas."
  • It has been used as a mild general anesthetic, especially in dentistry, due to its analgesic (pain-relieving) and sedative effects.

7. All of the following are excretory (waste) products of animals, except— [S.S.C. Online CHSL (T-I) 1.02.2017 (Shift-I)]

Correct Answer: (c) Carbohydrates
Solution:Carbohydrate is a major nutrient among the above options.
  • It is the best source of energy for beings (human beings).
  • It is not an excreted (residual) substance, whereas all other three substitutes are excreted substances.

8. Starch in potatoes reacts with _____ turning to a blue colour. [S.S.C. Online MTS (T-I) 12.07.2022 (Shift-III)]

Correct Answer: (c) Iodine
Solution:The presence of starch can be detected using an iodine solution (iodine-potassium iodide, or Lugol's iodine).
  • When iodine comes into contact with starch, it forms a dark blue-black complex.
  • This is a common chemical test for starch.

9. A sportsperson or an athlete can get quick and high amount of energy from which of the following? [S.S.C. Online Stenographer 13.09.2017 (Shift-I)]

Correct Answer: (b) Carbohydrate
Solution:Carbohydrates are the body's preferred and most readily available source of energy.
  • They are quickly broken down into glucose, which is then used by cells for fuel, making them ideal for providing instant energy during physical activity.

10. Which of the following is given to the player for instant energy? [S.S.C. Online Stenographer 14.09.2017 (Shift-I)]

Correct Answer: (a) Carbohydrate
Solution:For instant energy during sports, simple carbohydrates (like glucose drinks, energy gels, or fruits) are ideal because they are rapidly absorbed and converted into usable energy.