The Structure of a Plant

Q.

Why plants cannot use atmospheric nitrogen?

Q. Differentiate between pistil and stamen.

Q. What is the name of the process by which a seed grows into a baby plant?

1. Germination
2. Harvesting
3. Grafting
4. Layering

Q. The male part of the flower is known as ________.

1. petals
2. sepals
3. stamen
4. pistil

Q.

Which of the following plants have fibrous roots?

1. Bamboo

2. Radish

3. Sugarcane

4. Tulsi plant

Q.

Plants are classified into herbs, shrubs and trees based on their ___.

1. root

2. stem

3. flower

4. leaves

Q.

Question 9

Write the names of the parts of a flower.

Q.

The innermost part of a flower is

1. Sepals

2. Stamen

3. Pistil

4. Petals

Q. leaves are absent in a cactus plant -- state true or false and why

Q.

The flowers in a plant are transformed into fruits.

1. True

2. False

Q.

What are climbers? Give an example

Q. Rose plant has compound leaves.

1. True
2. False

Q. Which among the following statements are correct w.r.t the given image?

i. This is a simple leaf.
ii. This type of leaf is seen in rose.
iii. This type of leaf is seen in hibiscus.

1. ii and iii
2. i and iii
3. Only ii
4. Only i

Q. During seed germination, what is the direction of growth of shoot and root?

1. Both shoot and root grow upwards.
2. Both root and shoot grow downwards.
3. Shoot grows upwards and root grows downwards.
4. Shoot grows downwards and root grows upwards.

Q. Identify parts of the plant A, B, C and D from the characteristics given below.

A: It is the most attractive part of the plant and means of reproduction.
B: It is flat and a major site for the production of food.
C: It is an edible part of the plant in some cases. It's main function is to protect the seeds.
D: It supports the parts of the plant and conducts water.

1. A - Leaf, B - Stem, C - Flower, D - Root
2. A - Fruit, B - Root, C - Flower, D - Stem
3. A - Fruit, B - Root, C - Stem, D -Flower
4. A - Flower, B - Leaf, C - Fruit, D - Stem

Q. To make food, plants require from the soil and from air in the presence of sunlight.

1. nutrients
2. water
3. oxygen
4. carbon dioxide
5. chemicals

Q. What are the common parts that you observe in all plants?

1. Root
2. Fruit
3. Stem
4. Stomata

Q. All plants are similar.

1. False
2. True

Q. Which of these statements are correct about taproots?

1. It consists of a single main root.
2. Lateral branches of roots emerge from the main root.
3. Main root and lateral roots are similar in size.
4. Wheat and rice have taproot system.

Q.

Describe the parts of a pistil. [3 MARKS]

Q. Read the function of parts of a plant given below and write the names corresponding to it.
(a) Fixes plant to the soil
(b) Prepares starch
(c) Supports branches and bears flowers

Q. State whether the following statements are true or false.
Statement 1- The loss of water through leaves is called transpiration.
Statement 2- Parallel venation is found in plants that have a taproot system.

1. False, True
2. True, True
3. True, False
4. False, False

Q. Photosynthesis in green plants is directly and indirectly dependent on so many plant structures. Explain briefly the role of the following structures in this process.
(a) Guard cells ..............................................
(b) Cuticle.......................................................................
(c) Mesophyll cells........................................................
(d) Xylem tissue in the leaf veins...............................
(e) Phloem tissue in the leaf veins..............................
(f) Stomata......................................................................

Q.

Which of the following is not involved in the process of transpiration?

1. Roots

2. Leaves

3. Bark

4. Lenticels

Q. Which of the following plants cannot stand upright and spread on the ground?

1. Pumpkin
2. Cucumber
3. Money plant
4. Watermelon

Q.

Name and define the different types of leaves? [3 MARKS]

Q.

Plants which synthesise their food themselves are called saprotrophs.

1. True
2. False

Q.

Some plants have underground as well as aerial roots. Name one of such plants.

Q. Which of the following is given out during photosynthesis?

1. Water
2. Oxygen
3. Carbon dioxide
4. Nitrogen

Q. Which among the following statement(s) is/are not true for stems?

1. In some plants, stems store water and food.
2. It bears and supports leaves, flowers and fruits.
3. It is the most attractive part of a plant.
4. It conducts water and minerals from roots to other plant parts.