PART - 1 - Unit II : CH - 6 Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Distinguish between chloroplast arid chromoplast (any three).

Answer the following with reference to the anatomy of dicot root:

1. Where is pericycle located?
2. How are xylem vessels arranged?
3. What do you call such an arrangement?
4. Which type of cells constitute the cortex?

List out some living features of viruses.

Give the cause for the Heart sounds.

What is the basis for designating C₃ and C₄ pathways of photosynthesis?

Amrita while playing with her friend, near the pond noticed in the pond that a green colour covering is floating on the surface of the water. She discussed this with her friend and both got surprised. Next day in the school Amrita asked her teacher about the same. Teacher told her, that was nothing, but green algae which occur both in fresh and marine water habitats.

1. Mention the economic importance of algae.
2. Why green algae are considered to be the ancestors of all land plants. Justify the statement by giving reasons.
3. What values as a good biology student are reflected from Amrita's character.

What is the procedure advised for the correction of extreme renal failure? Give a brief account of it.

Describe the structure of contractile proteins.

Write differences between Endocrine glands and Exocrine glands.

Differentiate between the morphology of stems and roots.