Which one of the following categories of animals, is correctly described with no single exception in it?

All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).

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All bony fishes have few pairs of gills and an operculum on each side.

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All sponges are marine and have collared cells.

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All mammals are viviparous and possess diaphragm for breathing.

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Solution

The correct option is B All bony fishes have few pairs of gills and an operculum on each side.
All bony fishes have few pairs of gills and an operculum on each side. So, the correct answer is (b).

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Similar questions

Q. Question 11
Find out the false statement

(a) Aves are warm blooded, egg laying and have four chambered heart
(b) Aves have feather covered body, fore limbs are modified as wing and breathe through lungs.
(c) Most of the mammals are viviparous.
(d) Fishes, amphibians and reptiles are oviparous

Q. The heart of mammals and birds is four-chambered, while fishes have two-chambered hearts and amphibians and reptiles have three-chambered hearts. The hearts of birds and mammals are:

Which of these statements are correct?
(i) All vertebrates have four-chambered hearts.
(ii) Deoxygenated and oxygenated blood are separated in animals with high energy needs.
(iii) Fishes have double circulation.

Q. The animal kingdom is full of a rich and diverse group of organisms. Answer the following question using the choices provided. The answer choices may be used once, more than once, or not at all.
This group of animals is composed of organisms that are entirely aquatic and breathe with gills. They possess bony skeletons and breathe using gills.

How do fishes cope up with two chambered heart where oxygenated and deoxygenated blood mixes up unlike mammals which have four chambered heart for efficient flow of blood?

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Which one of the following categories of animals, is correctly described with no single exception in it?

The correct option is B All bony fishes have few pairs of gills and an operculum on each side.All bony fishes have few pairs of gills and an operculum on each side. So, the correct answer is (b).

The correct option is B All bony fishes have few pairs of gills and an operculum on each side.
All bony fishes have few pairs of gills and an operculum on each side. So, the correct answer is (b).