Unit - 1.2 Tissue in Plants — BIOLOGY STD 7 — Question

Differentiate between
amphibians and Pisces

Find the odd one out. Give reasons:
ureter, kidney, urinary bladder, lung, urethra

Take some boiled potatoes, french fries, baked ‘ potatoes and potato chips. Rub a small amount of each of these on a brown paper. Write the name of \ each item below the spot you rubbed. Wait for five minutes for the spot to dry. Hold the paper towards light and record your observation. Which type of potatoes contain fat ? If you are on a low fat diet, which type of potatoes would you eat ? Why?

Why bryophytes are called amphibians of the plant kingdom?

Match the animals given under column A with their respective classification group given under column B

	Column A		Column B
1	Sponge	a	Amphibia
2	Snail	b	Reptilia
3	Butterfly	c	Echinodermata
4	Toad	d	Mollusca
5	Lizard	e	Arthropoda
6	Starfish	f	Porifera

Give four example :
Invertebrates:

Answer in detail.
You are asked to classify an animal in the correct group. The animal has a soft body and arm-like tentacles. You dissect the animal and find that it has an internal shell. Is the animal a cnidarian or a mollusc? Explain your answer.

How do skin and lungs help in excretion ?

Differentiate between
radially symmetrical and bilaterally symmetrical body

Briefly explain four types of bacteria on the basis of their shape.