Pisces

Q.

How many hearts does an earthworm have?

Q.

What is the advantage of having a four-chambered heart?

Q.

Ladybird is useful to get rid of ___________.

1. Aphids

2. Mosquitoes

3. Boll worms

4. Jassids

Q.

What are placoid and ctenoid scales?

Q.

In which of the following vertebrate group/groups, the heart does not pump oxygenated blood to different parts of the body?

1. Pisces and amphibians

2. Amphibians and reptiles

3. Amphibians only

4. Pisces only

Q.

The limbless amphibian is:

1. Icthyophis

2. Hyla

3. Rana

4. Salamander

Q.

The endoskeleton of fishes is made up of cartilage and bone. Classify the following fishes as cartilaginous or bony:

Torpedo, Sting ray, Dogfish, Rohu, Angler fish, Exocoetus.

Q.

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

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

2. All mammals are viviparous and possess diaphragm for breathing

3. All sponges are marine and have collared cells.

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

Q.

Select the correct set of animals that possess metanephric kidney.

1. Mammals only.

2. Amphibians only.

3. Birds and reptiles only.

4. Birds, reptiles, and mammals only.

Q.

Do sponges have nervous system?

Q.

Are bony fishes ammonotelic?

Q. Some fishes have an open circulatory system.

1. True
2. False

Q.

Which animals dont have a heart?

Q.

The eggs of frogs do not have shells for protection, yet they are safe in the water. How?

Q.

What is the difference between animals belonging to the Aves group and those in the Mammalian group?

Q.

The operculum is a bony plate covering the gills of ________.

1. bony fishes

2. cartilaginous fishes

3. all fishes

4. tadpole

Q.

Name the phylum in which pharyngeal gill slits are present.

Q.

What are adaptations in fishes due to which they are aquatic?

Q.

Two chambered heart is present in

1. Fishes

2. Amphibians

3. Birds

4. Reptiles

Q.

Herpetology is a branch of science that deals with______.

1. Aves

2. Fishes

3. Mammals

4. Reptiles

Q.

How are aquatic plants adapted to their water environment?

Q.

Name the class of vertebrates which possess a two-chambered heart.

Q.

Question 41
Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilaginous or bony: Torpedo, Stingray, Dogfish, Rohu, Anglerfish, Exocoetus.

Q.

What are Cosmoid scales?

Q.

In which fish placoid scales are present?

Q. what is endoskeleton and exoskeleton?

Q.

Name four Chordata classes having cold blooded animals.

Q.

Give a reason for the following.

Deep sea divers carry oxygen cylinders with them when they go under water.

Q.

___________ are cold-blooded and their hearts have only two chambers.

1. Fishes

2. Birds
3. Mammals
4. Snakes

Q.

Pisces have ___ chambered heart

1. one

2. two

3. three

4. four