PART - 2 - Unit V : CH - 17 Locomotion and Movement — BIOLOGY STD 11 Science — Question

In which segment does the following structures lies in the earthworm's body?

1. Spermathecae.
2. Pharynx.
3. Gizzard.
4. Intestine.
5. Septal nephridia.
6. Ovary.
7. Testes.
8. Typhlosole.
9. Lateral heart.
10. Pharyngeal nephridia.

What are the key features of phylum Porifera? Write in detail.

Sonali, a 7 years old girl was roaming in the garden, when she saw a butterfly hovering over a flower. She was attracted to the flower and plucked it. On coming back home, she showed it to her brother (a biology graduate student) who scolded her for her action. He explained the importance of flowers for the plants and insects like butterflies honeybees, etc. Sonali realised her mistake and immediately promised not to repeat įt.

1. What is the importance of flower?
2. How are insects attracted to flowers?
3. Name the different parts of a flower.
4. What values are displayed by Sonali?

Explain the following processes:
Depolarisation of the membrane of a nerve fibre.

Match the items of column I with those of column II:

	Column I		Column II
(a)	Ammonotelism	(i)	Birds
(b)	Bowman’s capsule	(ii)	Water reabsorption
(c)	Micturition	(iii)	Bony fish
(d)	Uricotelism	(iv)	Urinary bladder
(e)	ADH	(vii)	Renal tubule

What is the difference between cell wall and ribosomes of a prokaryotic and a eukaryotic cell?

Describe the important properties of enzymes.

Discuss "The respiratory pathway is an amphibolic pathway."