Modifications of Leaf

Q.

An example of homologous organs is:

1. our arm and a dogs foreleg

2. our teeth and an elephants tusks

3. potato and runners of grass

4. All of the above

Q. Leaves in desert plants are modified into spines. Why?

1. To bear more flowers​
2. To minimise water loss through transpiration
3. To absorb more water​
4. To reduce the rate of photosynthesis

Q. In early winter mornings, we can see drops of water on the grass. This is because of:

1. Photosynthesis
2. Transpiration
3. Condensation
4. Water cycle

Q.

Is garlic a root or stem?

Q.

Process through which plants release moisture into the atmosphere is called _____.

1. water cycle

2. water harvesting

3. evaporation

4. transpiration

Q.

What is special about the leaves that plant can synthesis food but other parts of a plant cannot?

Q. What are the plants with seeds having two cotyledons called?

1. Dicots
2. Monocots
3. Cycas
4. Pinus

Q.

Tall plants with hard and thick brown stems are known as __.

Q.

Phyllode is present in

1. Australian Acacia

2. Opuntia

3. Euphorbia

4. Asparagus

Q.

The type of nutrition in green plants is called

1. Photosynthesis

2. Heterotrophic

3. Saprobiotic

4. Autotrophic

Q. The outermost layer of the pericarp is called:

1. Epicarp
2. Fruit Peel
3. Mesocarp
4. Endocarp

Q. In some plants, the axillary bud is modified into thorn for protection. This is an example of:

1. Aerial stem modification
2. Sub-Aerial stem modification
3. Underground root modification
4. Aerial leaf modification

Q.

What is a pitcher plants?

Q.

What is a hesperdium fruit?

Q.

Geocarpic fruit is

1. Carrot

2. Groundnut

3. Radish

4. Orange

Q. Leaves have pores called which allow the exchange of carbon dioxide and oxygen.

1. blades
2. stomata
3. veins
4. nodes

Q.

Thorns, tendrils, underground stem and leaves are all modifications of the stem.

1. True

2. False

Q.

What does Stipe mean?

Q. Which of the following are the different parts of a mango fruit?

1. Exocarp
2. Mesocarp
3. Endocarp
4. Pericarp

Q.

Why does photorespiration increase with temperature?

Q.

The arrangement of leaves on the stem of a plant is called ___.

Q.

Cactus spines are modified ______________

Q.

A papilionaceous corolla has

1. valvate aestivation

2. twisted aestivation

3. descendingly imbricate aestivation

4. ascendingly imbricate aestivation

Q. The leaves of cacti are modified into ____ to prevent water loss.

1. buds
2. tendril
3. spines
4. tuber

Q.

The leaves in desert plants are either absent, very small, or in the form of spines to reduce:

1. Respiration

2. Transpiration

3. Sweating

4. All of these.

Q.

The leaves of the ____ plants have thick cuticles.

Q.

Why does some plants like onions have stomata on both the side of the leaf that is under and above ?

Q. nucleophile strength C6H5O-, C6H5S-, C6H5CH2-, CH3COCH2-

Q.

Difference between Tendrils & Spines.

Q.

The maximum loss of water in transpiration is from:

1. lenticels

2. cuticle

3. hydathodes

4. stomata