Getting To Know Plants Test

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Getting To Know Plants Test - 12

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following represents petiole?

A
1

B
2

C
3

D
4

Solution

a) The part labelled as 1 is the leaf lamina.
b) The part labelled 2 is the midrib.
c) The part labelled 3 is leaf margin or leaf blade.
d) The petiole is a stalk that attaches a leaf to the plant stem. The part labelled 4 is the petiole.
Thus, the correct answer is (4).
Question 2
1 / -0

The substance not essential for photosynthesis is?

A
Sunlight

B
Chlorophyll

C
Nitrogen

D
Carbon dioxide
Solution
Correct Option- C
Explanation -
Photosynthesis is an anabolic process in which the green plants convert light energy to chemical energy and produce nutrients in the form of carbohydrates.
Green plants utilize solar energy to synthesize nutrients from carbon dioxide and water from the atmosphere with the help of chlorophyll pigment.
Thus, nitrogen doesn't play any significant role during the process of photosynthesis. Hence, the correct option is Nitrogen.
Question 3
1 / -0

Swollen root of Radish is made of two parts.

A
Stem and epicotyl

B
Primary root and hypocotyl

C
Primary root and epicotyl

D
Secondary root and primary root

Solution

B. Primary root and hypocotyl
Reason: The Swollen root of the radish is made up of a long fleshy tap root and a very short fleshy hypocotyl. Very thin secondary roots are found on the surface but they are not swollen.
Question 4
1 / -0

Which one of these is not a part of a leaf?

A
Midrib

B
Lamina

C
Leaf base

D
Stamen

Solution

A) The midrib is the central vein in the middle of the leaf.
B) The lamina is the broad green part of the leaf in which photosynthesis takes place.
C) Leaf base is the lowermost part of the leaf from where it attaches to the stem or branch.
D) Stamen is the male reproductive part present in a flower. It is not a part of a leaf.
So, the correct option is 'Stamen'.

Question 5

1 / -0

The given table shows some characteristics of herbs, shrubs and trees. Which of the given points is/are incorrect?

	Features	Herbs	Shrubs	Trees
(i)	Size	Very small, usually less than 1 m high	Medium sized, usually 1.3 m high	Tall, generally more than 3 m high
(ii)	Nature of stem	Green and tender stem s with few brandies	Hard and very thick stem with branches on the upper part of the stem	Hard stem but not very thick; branches arise near the base of the stem
(iii)	Examples	Grass, tomato, wheat, mint	Hibiscus, lemon, rose. jasmine	Gu I moh a r, neem, peeps!, mango

(i) only

(ii) only

(iii) only

(ii) and (iii) only

Solution

The stem of hats is green and tender and has few branches. Shrubs have hard woody stems which are not very thick and the branches arise near the base of the stem. Trees, on the other hand, have hard and thick stems and the branches arise on the upper part of the stem.

Question 6
1 / -0

Which of the following pairs is/are correct?
(A) Main root - Storage
(B) Lateral root - Absorption
(C) Root hair - Conduction

A
All are correct

B
A and B

C
Only A

D
None of these

Solution

The region of cell differentiation or maturation is differentiated into root hairs. Most of the water absorption occurs through this region.
The roots are modified to form storage roots such as conical, fusiform, napiform, tuberous
Lateral roots extend horizontally from the primary root and this contributes to water uptake and nutrient uptake.

So, the correct option is 'A and B'
Question 7
1 / -0

.......... are found in wheat.

A
Respiratory roots

B
Fasciculate roots

C
Fibrous roots

D
Tap roots

Solution

Respiratory roots are non-photosynthetic and non-green in nature. They are seen in plants growing in marshy regions and in aquatic plants. They are found in wheat. They are also called as breathing roots. Fasciculated roots are modified adventitious roots. They are arranged in fascicles.
Thus, the correct answer is 'Respiratory roots.'
Question 8
1 / -0

Edible roots are found in:

A
Rice

B
Wheat

C
Potato

D
Sweet potato

Solution

The edible part of the sweet potato plant is a modified fleshy root. Due to the storage of food, the root of the plant of the sweet potato becomes thick and fleshly.
So, the correct answer is option D.
Question 9
1 / -0

The part of a flower that bears ovules:

A
Carpel

B
Stamen

C
Petal

D
Sepal
Solution
- Carpel is a female reproductive organ of a flower, consisting of a stigma, style, and ovary.
- It may appear single or as a part of a group.
- The ovary constitutes ovules, which develop into seeds upon fertilization.
So, the correct answer is option 'A'.
Question 10
1 / -0

Which of the following terms constitute the female part of the flower?

A
Sepals, petal and stamen

B
Stigma, style and ovary

C
Ovary, stamen and stigma

D
Ovary, style and stamen

Solution

The stigma receives the pollen grain, the pollen tube passes through the style and the ovary is where seeds are formed.
So, the correct option is B.

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Getting To Know Plants Test - 12

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Getting To Know Plants Test - 12

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SHARING IS CARING

Question 1

1

2

3

4

Solution

Question 2

Sunlight

Chlorophyll

Nitrogen

Carbon dioxide

Solution

Question 3

Stem and epicotyl

Primary root and hypocotyl

Primary root and epicotyl

Secondary root and primary root

Solution

Question 4

Midrib

Lamina

Leaf base

Stamen

Solution

Question 5

(i) only

(ii) only

(iii) only

(ii) and (iii) only

Solution

Question 6

All are correct

A and B

Only A

None of these

Solution

Question 7

Respiratory roots

Fasciculate roots

Fibrous roots

Tap roots

Solution

Question 8

Rice

Wheat

Potato

Sweet potato

Solution

Question 9

Carpel

Stamen

Petal

Sepal

Solution

Question 10

Sepals, petal and stamen

Stigma, style and ovary

Ovary, stamen and stigma

Ovary, style and stamen

Solution

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