Seed Dispersion

Q. Why is there a need for seed dispersal in plants?

1. The seedlings grow beneath or near the parent plant so they will not get sufficient nutrients.
2. The competition for light, space, water and nutrients exists between every one of the seedlings as well as with the parent plant.
3. The seedlings will produce more fruit than the parent plant if they are dispersed.
4. All of the above

Q. Seed dispersal helps the plants to

1. grow faster
2. prevent overcrowding
3. invade new habitats
4. attract plants and animals

Q.

The transfer of seeds far away from the parent plant is known as .

1. dispersion
2. pollination
3. fertilisation

Q. Which of the following is/are dispersed by water?

1. 
2. 
3. 
4. 

Q. Movement of seeds away from the mother plant for germination is called of seeds.

Q. All the seeds in a fruit germinate and grow into new plants.

1. True
2. False

Q. Seeds of drumstick and maple are carried to long distances by wind because they possess ______________.

1. 
   spiny seeds
2. 
   hairy seeds
3. 
   winged seeds
4. 
   spongy seeds

Q. Seed dispersal is essential for the survival of plants.

1. True
2. False

Q. Which among the following is/are dispersed by animals?

1. 
2. 
3. 
4. 

Q. Assertion (A): All plants produce large number of seeds.

Reason (R): All the seeds do not germinate.

1. A is correct but R is incorrect.
2. A is incorrect but R is correct.
3. Both are correct and R is correct explanation of A.
4. Both are correct but R is not the correct explanation of A.

Q. Q1.​​​​​​Why does a plant produce a large number of seeds
Q2.where is the seed form
Q3. How are seed of coconut, pea, xanthium, dandelion dealers

Q. Plants have special mechanism for seed dispersal.

1. True
2. False

Q. The following figure representing seed dispersal. Select the option which correctly identifies plants X, Y and Z.

1. X: Dandelion, Y: Castor, Z: Xanthium
2. X: Balsam, Y: Dandelion, Z: Castor
3. X: Pea, Y: Dandelion, Z: Xanthium
4. X: Dandelion, Y: Balsam, Z: Xanthium

Q. Seeds of drumstick and maple are carried to long distances by wind because they possess ______________.

1. 
   winged seeds
2. 
   hairy seeds
3. 
   spongy seeds
4. 
   spiny seeds

Q. The seeds of the plant given below are dispersed by:

Q. Match the following plants to the appropriate methods of seed dispersal.

1. Wind
2. Water
3. Animals
4. Fruit explosion

Q. State whether the following statements are true or false.
Statement 1- Dandelion produces winged seeds that get dispersed through the wind.
Statement 2- Lotus produces spongy and fibrous seeds that get dispersed through water.

1. Statement 1: False
   Statement 2: True
2. Statement 1: False
   Statement 2: False
3. Statement 1: True
   Statement 2: True
4. Statement 1: True
   Statement 2: False

Q.

What do we call a dormant seed which loses viability if in case we dehydrate or freeze the same?

1. The condition is thermodormancy

2. The condition is photodormancy

3. The condition is recalcitrant seed dormancy

4. The condition is vivipary

Q. Pick the odd one out with respect to seed dispersal.

1. Pea
2. Guava
3. Watermelon
4. Cherry

Q. What are the components for which plant offspring competes with the mother plant?

1. Water
2. Sunlight
3. Nutrients
4. Seeds

Q. Seeds of drumstick and maple are carried to long distances by wind because they possess

1. Winged seeds
2. Hairy seeds
3. Ridged fruits
4. Spiny seeds

Q. Seed dispersal is essential for the survival of plants.

1. True
2. False

Q. Which of the following statements is/are correct?

1. Majority of plants use biotic agents for seed dispersal.
2. Seed dispersal by water is more common amongst the abiotic agents.
3. Among animals, insects, particularly bees are the dominant biotic agents of seed dispersal.
4. None of the above

Q. Assertion (A): All plants produce large number of seeds.

Reason (R): All the seeds do not germinate.

1. A is correct but R is incorrect.
2. A is incorrect but R is correct.
3. Both are correct and R is correct explanation of A.
4. Both are correct but R is not the correct explanation of A.

Q. What are the components for which plant offspring competes with the mother plant?

1. Water
2. Sunlight
3. Nutrients
4. Seeds

Q. Which of the following is a vegetative plant part?

1. Fruit
2. Stem
3. Flower
4. Pollen grain

Q. Which of the following organisms reproduce by spore formation?

1. Rose
2. Spirogyra
3. Yeast
4. Rhizopus