VERTEBRATES AND INVERTEBRATES (Part-I)

11. Spiders belong to the phylum [S.S.C. Online CHSL (T-1) 9.01.2017 (Shift-I)]

(a) Mollusca
(b) Annelida
(c) Cnidaria
(d) Arthropoda

Correct Answer: (d) Arthropoda

Solution:

Common Name	Spiders
Kingdom	Animalia
Phylum	Arthropoda
Class	Arachnida
Order	Araneae

12. Spider webs are made up of ____ a natural fibre made up of protein. [S.S.C. Online CGL (T-I) 20.08.2021 (Shift-IV)]

(a) Fur
(b) Hair
(c) Wool
(d) Silk

Correct Answer: (d) Silk

Solution:Spider web or cob web is a structure made by a spider. It is made from proteinous spider silk extracted from its spinneret. The spider’s web is usually there to catch its prey. The spinneret glands are located at the tip of the spider’s abdomen. Each gland produces a thread for a specific purpose.

13. Which of the following is a fish? [S.S.C. Online Graduate Level (T-I) 2.09.2020 (Shift-II)]

(a) Jelly fish
(b) Lobster
(c) Salmon
(d) Whale

Correct Answer: (c) Salmon

Solution:Jelly fish and lobster are invertebrates under the genus Cilentrata and Arthropoda respectively. Whale is an animal of the Mammalia class, whereas Salmon is an animal of the fish class.

14. Which of the following animal is a mammal? [S.S.C. Online Constable GD 22.02.2019 (Shift-II)]

(a) Bull frog
(b) Tortoise
(c) Annealed
(d) Whale

Correct Answer: (d) Whale

Solution:The whale found in the oceans is a mammal animal, which does not come under the fish category. Whales directly give birth to developed babies. Whale does not lay eggs.

15. Lacrymal glands are situated in the [S.S.C. Online Graduate Level (T-I) 27.08.2016 (Shift-I)]

(a) Palms
(b) Buccal cavity
(c) Eye orbit
(d) Stomach

Correct Answer: (c) Eye orbit

Solution:The lacrymal gland is located within the orbit above the lateral end of the eye. It continually releases fluid which cleanses and protects the eye’s surface as it lubricates and moistens it. These lacrymal secretions are commonly known as tears.

16. For the aquatic organisms, the source of food is [S.S.C. Online CHSL (T-I) 20.01.2017 (Shift-I)]

(a) Phytoplankton
(b) Sea Weed
(c) Aqua plankton
(d) Zooplankton

Correct Answer: (a) Phytoplankton

Solution:For the aquatic organisms, the source of food is Phytoplankton. Phytoplankton -> Zooplankton -> small fish -> big fish. Phytoplankton is the producers, zooplankton is the primary consumer which is mainly herbivores, small fish is the secondary consumer omnivorous, and big fish is the tertiary consumer which is mainly omnivorous.

17. Which of the following is the largest known cell? [S.S.C. Online CHSL (T-I) 15.01.2017 (Shift-I)]

(a) Eukaryotic Cell
(b) Prokaryotic Cell
(c) Mycoplasma
(d) Ostrich Eggs

Correct Answer: (d) Ostrich Eggs

Solution:The egg of an ostrich (measuring 170 mm x 130 mm) is the largest known single cell. A cell is the smallest, basic unit of the living matter that composes all the processes of life. Externally bonded by a cell membrane, it contains a mass of cytoplasm, having one or more nuclei and other organelles.

18. The scientific study of birds is called [S.S.C. Online Graduate Level (T-I) 20.08.2021 (Shift-I)]

(a) Ichthyology
(b) Ornithology
(c) Pomology
(d) Gerontology

Correct Answer: (b) Ornithology

Solution:The study of birds is called Ornithology. Any bird—whether it is a tiny hummingbird or an extra large emu—falls under the realm of ornithology. It is the scientific study of birds, and it evolved in Europe during late 16th century as humans were always fascinated by birds and their natural history.

19. Which of the following is the largest sea bird with the longest wingspan? [S.S.C. Online Graduate Level (T-I) 20.08.2021 (Shift-I)]

(a) Booby
(b) Auk
(c) Wandering Albatross
(d) Frigatebird

Correct Answer: (c) Wandering Albatross

Solution:The largest living or flying bird by wingspan is the Wandering Albatross (Diomedea Exulans family) of the sub-Antarctic oceans. The maximum dimensions in this species are a length of 1.44 m (4.7 ft) and a wingspan of 3.65 m (12.0 ft). It was the first species of albatross to be described and was long considered the same species as the Tristan albatross and the antipodean albatross.

20. Which of the following is a flightless bird? [S.S.C. Online CGL (T-I) 23.08.2021 (Shift-III)]

(a) Kiwi
(b) Hen
(c) Peacock
(d) Crane

Correct Answer: (a) Kiwi

Solution:Ostrich, Emu, Kiwi all are flightless birds. They all are under subclass Neornithes. Tail is short and usually ended in a pygostyle. The retrices are arranged in a semicircle around the pygostyle.