Write the characteristics of heartwood and sapwood.

3

(a)

What are the charecteristic difference found in vascular tissu of gymnosperms and angiosperms?

3

(a)

While eating peach or pear, it is usually seen that some stone-like structures get entangled in the teeth. What are these stone-like structures called?

3

(a)

Explain the formation of vascular cambium.

3

(a)

Distinguish between sapwood and heartwood .

3

(a)

List out the differences between intrafascicular cambium and interfascicular cambium.

3

(a)

What is the difference between lenticels and stomata?

3

(a)

Draw a labelled diagram of the following:
(a) Gram Seed
(b) V.S. of Maize Seed

3

(a)

How do the various leaf modifications help plants?

3

(a)

Define cymose inflorescence.

3

(a)

What is the role of veins and veinlets in leaves?

3

(a)

What is the difference and similarity between prop root and stilt root?

3

(a)

What is the difference between simple leaf and compound leaf?

3

(a)

What changes in histology makes a stem to produce flowers?

3

(a)

Describe in brief, structure of androecium.

3

(a)