VERTEBRATES AND INVERTEBRATES (Part-II)

1. DNA stands for ______. [S.S.C. Online CHSL (T-I) 18.01.2017 (Shift-II)]

(a) Di Nucleic Acid
(b) Deoxy Nucleic Acid
(c) Diribonucleic Acid
(d) Deoxyribonucleic Acid

Correct Answer: (d) Deoxyribonucleic Acid

Solution:DNA is the fundamental molecule that carries genetic information in all known organisms and many viruses. Its full name, Deoxyribonucleic Acid, refers to its chemical structure: it's a nucleic acid containing deoxyribose sugar.

2. Rodentia Sciurus is the scientific name of _____. [S.S.C. Online CHSL (T-I) 9.01.2017 (Shift-III)]

(a) Rat
(b) Platypus
(c) Squirrel
(d) Beaver

Correct Answer: (c) Squirrel

Solution:Squirrels are members of the family Sciuridae, a family that includes small or medium-size rodents. The squirrel family includes tree squirrels, ground squirrels, chipmunks, marmots, flying squirrels, and prairie dogs amongst other rodents.

3. Which of the following is the last stage of an insect during the process of growth and development? [C.P.O. S.I. 4.06.2016 (Shift-I)]

(a) Pupa
(b) Nymph
(c) Imago
(d) Larva

Correct Answer: (c) Imago

Solution:The final stage of the insect during the process of growth and development is the imago. The earlier stages are (from the beginning) - the imago stage comes only after the egg, larva and pupa.

4. Which part of the body of fish helps them to change direction and maintain balance in water? [S.S.C. Online MTS (T-I) 19.09.2017 (Shift-I)]

(a) fins and tail
(b) Wings and scales
(c) Tail and scales
(d) Gills and fins

Correct Answer: (a) fins and tail

Solution:In fish, the fins and tail help in changing direction and maintaining balance in the water.

5. Which type of reproduction occurs in Hydra? [S.S.C. Online MTS (T-I) 8.08.2019 (Shift-I)]

(a) Fragmentation
(b) Budding
(c) Binary Fission
(d) Spore Formation

Correct Answer: (b) Budding

Solution:Hydra undergoes an asexual mode of reproduction by process of budding. In the asexual mode of reproduction, no gametes are involved. In the process of budding new offspring develop from parent cell through repeated mitotic division.

6. Which of the following animal lives in a burrow/den? [S.S.C. Online Constable GD 1.03.2019 (Shift-III)]

(a) Tortoise
(b) Crocodile
(c) Octopus
(d) Rabbit

Correct Answer: (d) Rabbit

Solution:Rabbits live in a variety of environments such as deserts, swamps, forests, grasslands and prairies. Rabbits generally do not build burrows or dens themselves, but instead use burrows and dens left by other animals for their living and protection from adverse weather.

7. Which of the following has the longest life? [S.S.C. Online Graduate Level (T-I) 7.09.2016 (Shift-III)]

(a) Eagle
(b) Tortoise
(c) Cheetah
(d) Elephant

Correct Answer: (b) Tortoise

Solution:Tortoises are famous for their exceptionally long lifespans, with some species known to live for over 100 years, and individual records exceeding 150-200 years.

8. Which reptile has four cardiac chambers? [S.S.C. Online MTS (T-I) 19.08.2019 (Shift-II)]

(a) Tortoise
(b) King Cobra
(c) Chameleon
(d) Crocodile

Correct Answer: (d) Crocodile

Solution:Most reptiles have a three-chambered heart (two atria and one partially divided ventricle). However, crocodilians (crocodiles, alligators, caimans, and gharials) are unique among reptiles in having a fully four-chambered heart, similar to birds and mammals. This allows for complete separation of oxygenated and deoxygenated blood, making their circulatory system more efficient.

9. A group of fish is called ____. [S.S.C. Online Constable GD 1.03.2019 (Shift-II)]

(a) Standard
(b) Bus
(c) Army
(d) School

Correct Answer: (d) School

Solution:A group of fish, consisting of fish of the same species, is called a school or shoal. This group consists of a large number of fish, which swim in a synchronized manner in the sea or rivers.

10. Where does amoeba digest its food? [S.S.C. Online C.P.O.S.I. (T-I) 7.01.2017 (Shift-I)]

(a) Foot
(b) Nucleus
(c) Food vacuole
(d) Cell membrane

Correct Answer: (c) Food vacuole

Solution:Amoebas are single-celled organisms that capture food particles through a process called phagocytosis (engulfing the food). Once engulfed, the food particle is enclosed within a membrane-bound sac called a food vacuole. Digestive enzymes are then released into this vacuole to break down the food.