Rhizome

Q.

What is periderm? How does periderm formation take place in the dicot stem?

Q.

Potato and ginger are both underground parts that store food. Where is the food prepared in these plants?

Q.

Rhizome of ginger is like the roots of other plants that, grows underground. Despite this fact ginger is a stem and not a root. Justify.

Q.

Which parts in ginger and onion are edible?

Q.

Why does cactus have so many thorns or spines?

Q. The rhizome differs from the root with respect to

1. Scale leaves at nodes and buds in axil
2. Its thickness
3. Green colour
4. Thin roots

Q.

How does NADP+ become NADPH?

Q.

A conjoint and open vascular bundle will be observed in the transverse section of

(a) monocot root

(b) monocot stem

(c) dicot root

(d) dicot stem

Q.

What Type of Root Is Onion?

Q. In ginger, vegetative propagation occurs through

1. bulbils
2. rhizome
3. offsets
4. runners

Q.

Write two examples of plants with thorns.

Q. The residual persistent nucellus occurs in

1. Groundnut
2. Beet
3. Castor
4. Barley

Q.

Stolon, offset and rhizome are different forms of stem modifications. How can these modified forms of stem be distinguished from each other?

Q. Enumerate the adaptions present in the leaves of gymnosperms to check excess loss of water

Q.

Stilt roots are found in which plant?

Q.

Is umbellate inflorescence within racemose or cymose inflorescence or its a separate type?

Q. From the description given below, identify the type of plant modification.
A thick horizontally growing stem which usually stores food material. It has nodes and internodes, scale leaves, axillary buds, adventitious roots and a terminal bud.

1. Rhizome, underground stem modification
2. Tuber, underground stem modification
3. Sucker, underground stem modification
4. Rhizome, underground root modification

Q.

In which plant stem is modified to thorns?

Q.

Give an example of 3 plants that have:

(1) Spiny fruits

(2) Spiny stems

(3) Red flowers

(4) Yellow flowers

(5) Leaves that close at night

(6) single-seeded fruits

(7) Many-seeded fruits

Q. Which of the following is not an artificial method of vegetative propagation ?

1. Cutting
2. Layering
3. Grafting
4. Hybridization

Q.

*What is cork?

Q. An underground stem without adventitious roots is

1. All correct
2. Colocasia
3. Onion
4. Potato

Q. Differentiate between runner and sucker.

Q.

What is meant by modification of roots?

Q.

A plant has thin green weak stem. Which category of plant it belongs to?

Q. Name the labelled 'x' in plant

1. Prickles
2. Hook

3. Thorn

4. Spines

Q. What are the advantages of propagating plants without using seeds? Name any three methods of vegetative propagation.

Q.

Is ginger a rhizome?

Q. Ginger plant has an underground stem which is a

1. Rhizome
2. Bulb
3. Tuber
4. Corm

Q.

What is the structure of a mature root?