Parts of Plants : Question Answers

Q.1. Match the columns:

Column ‘A’	(1) à (b) (2) à (e) (3) à (c) (4) à (a)	Column ‘B’
(1) Root		(a) Stem grows in height
(2) Part of stem between nodes		(b) Growing under the ground
(3) Stem		(c) Growing from plumule
(4) Bud		(d) Growing from radicle
		(e) Interode

Q.2. Find the odd man out:

(1) Node, internode, bud, root hair.

(2) Calyx, corolla, gynoecium, leaf apex.

Ans.        (1) Root hair (Rest are parts of the stem.)

(2) Leaf apex, (Rest are parts of the flower.)

Q.3. Where are the following parts located on the plant?

a)       Root cap -On the tip of the root.

b)       Root hair -At the tip of the root.

c)        Stalk -At the joint where the flower is attached to the stem.

d)       Veins - Inside the leaf lamina.

e)       Thalamus - At the base of the flower.

Q.4. Replace the question mark with the right word:

(1) Calyx : Sepals : : ? : Petals.

(2) Leaf apex : Tip of the leaf : : ? : Edge of the leaf.

Ans. (1) Corolla (2) Leaf margin

Q.5. Tell the difference between:

Leaf of hibiscus	Leaf of peepul
1.       Leaf margin of hibiscus leaf is serrated. 2.       Leaf apex of hibiscus leaf does not taper and is shorter. 3.       Hibiscus leaf has stipules.	1.       Leaf margin of peepul leaf is plain. 2.       Leaf apex of peepul leaf is tapering and pointed. 3.       Peepul leaf does not have stipules.

Calyx	Corolla
1.       Calyx is made up of sepals. 2.       Calyx is the outermost whorl of a flower. 3.       Calyx is generally green in colour. 4.       Calyx protects the flower when it is a bud. It also pro­tects the inner whorls of a flower later.	1.       Corolla is made up of petals. 2.       Corolla is the second whorl of a flower between calyx and gynoecium. 3.       Corolla is generally of differ­ent colours and is fragrant. 4.       Corolla attracts the insects with its colourful petals and fragrance. These insects help the flower in pollination.

Q.6. Name

a)       Parts of the root: Root tip, root hairs, root cap, lateral roots.

b)       Parts of the stem : Node, internode, axillary and terminal buds, branches.

c)       The place on the stem where leaves grow : Node.

d)       Parts of a leaf : Petiole, leaf base and stipule, leaf blade or lamina, leaf margin leaf apex, mid-vein, veins, veinlets.

e)       A small leaf-like part at the base the leaf: Stipule.

f)        Parts of a flower: Stalk, thalamus, calyx, corolla, androecium and gynoecium.

g)       Outermost whorl of a flower : Calyx.

Q.7. Fill in the blanks :

(1) The edge of the leaf is called the leaf margin.        

(2) The Androecium is made up of stamens.

(3) The flat part of a leaf is called the lamina or leaf blade.

(4) The corolla is the group of petals.

(5) The innermost whorl of the flower is the  Gynoecium.

Q.8. Answer the following questions:

(a) Name the parts of a plant.

Ans. The parts of a plant are root, stem, leaf, flower and fruit.

 (b) What are root hairs?

Ans. The hair-like fibres seen at the tip of the root are called root hairs.

(c) What is a bud? Where is it found on a plant?

Ans. (1)The angle between stem and the leaf is called axil.

(2)A small sprout grows from the axil and this later becomes a branch. (3)This sprout is called a bud. (4)Since this bud is in the axil of a leaf, it is called an axillary bud. (5)There is a terminal bud at the top of the stem as well. When this bud grows, the stem becomes taller.

(d) What is a leaf apex?

Ans. Leaf apex is the pointed tip of the leaf lamina. Leaf apex is also known as leaf tip.

Q.9.  Draw diagrams of:

Parts of root	Parts of stem
Parts of leaf	Parts of a flower