FREE NEET Biology Practice MCQ Test: Animal Kingdom Exercise 3 Questions Answers With Detailed Explanations [PDF]

Answer: (b)

The common Indian bull frog Rana tigrina lives in or near permanent freshwater lakes, ponds and streams. It is in the water most of the time. It lives near water mainly for two reasons : (i) To keep skin moist to carry on cutaneous respiration, and (ii) To immediately jump or slip into water to escape from enemies.

Answer: (a)

Answer: (d)

Answer: (a)

Sea anemone is completely nonparasitic form. It shows the example of mutualism. Sea anemone attaches itself to shell used by a hermit crab. The anemone obtains nourishment from the scraps of food left by the crab, and is transported from place to place when the crab moves. The crab is protected by the stinging cells in the tentacles of sea anemone. Mosquito and leech are parasites of animals and feed on their blood. Tapeworm is a human gut parasite.

Answer: (b)

In scorpion and spiders the respiratory organs are book lungs. They are named so because their folds resemble the leaves in a book. In this the exchange of gases takes place between the air of interlamellar spaces and the venous blood through the thin membranous walls of the lamellae.

Answer: (d)

In molluscs, blood often has a copper containing, blue respiratory pigment called haemocyanin. In insects, the blood called haemolymph is colourless. In echinodermates, blood is colourless as it has no respiratory pigment. In annelids, the blood is red with haemoglobin dissolved in plasma.

Answer: (a)

Torpedo is a sluggish fish. It is carnivorous. The prey is killed due to electric shock. The shock can also be harmful for human beings.

Answer: (b)

Diaphragm is a membrane that separates thoracic cavity from abdominal cavity. It is present only in mammals. All other chordates do not have diaphragm as their body cavity is not divided into thoracic and abdominal cavities. Chordates are coelomate animals having a true coelom, entercoelic and shizocoelic in origin. Pharyngeal gill slits are present at some stage, may or may not be functional. Nerve cord is dorsal and tubular.

Answer: (d)

Answer: (d)

Cyclostomes do not have paired appendages. Skin in Aves is neither moist nor glandular. Only preen gland is present at the base of tail. Chondrichthyes members have gills without operculum, except Chimaera. Prototherian mammals do not have ear pinnae and aquatic mammals lack hindlimbs (like whales and dolphins).

Answer: (d)

Answer: (b)

Jointed legs & chitinous exoskeleton are the common characters found in centipede, cockroach & crab.

Answer: (b)

In the open circulatory system, the blood is not confined to the blood vessels, but it flows in the open spaces. Prawn, Chelifer and cockroach have open circulatory system. Frog's tadpole has closed circulatory system, that is the blood flows in the blood vessels.

Answer: (d)

Answer: (b)

Answer: (b)

Answer: (b)

Aurelia is a genus of scyphozoan jellyfish (Cnidaria, Scyphozoa). Adamsia is a genus of sea anemones. It is usually found growing on a gastropod shell inhabited by the hermit crab, Pagurus prideaux. A cnidocytes (also known as a cnidoblast or nematocyte) is an explosive cell containing one giant secretory organelle that defines the phylum Cnidaria (corals, sea anemones, hydrae, jellyfish, etc.). Pleurobranchus is a genus of sea slugs, specifically side-gill slugs, marine gastropod mollusc.

Answer: (c)

Answer: (d)

Answer: (c)