Reproduction in Plants quiz

The male reproductive part of a flower is the:

Yeast reproduces by:

Potato is propagated by its:

The ovary develops into the:

A unisexual flower is found in:

Spirogyra reproduces by:

Seeds of coconut are dispersed by:

The fusion of male and female gametes is called:

The part of the pistil that receives pollen is the:

Which plant grows new plants from buds on its leaf margins?

Name the parts of a stamen and a pistil. (2 marks)

Why do seeds of Xanthium stick to animals? (2 marks)

Name two plants propagated by stem cuttings. (2 marks)

What is an embryo? Where is it found? (2 marks)

Why are wind-pollinated flowers small and not brightly coloured? (2 marks)

How do castor and balsam disperse their seeds? (2 marks)

Name two plants that reproduce by spores. (2 marks)

Distinguish between a seed and a fruit. (2 marks)

Why do plants raised by vegetative propagation bear flowers and fruits earlier? (2 marks)

What are winged seeds? Give an example. (2 marks)

A farmer cuts a potato into 6 pieces, each with an eye, and plants them. If each plant yields 8 potatoes, how many potatoes does he get? How many plants can he grow next season if he plants every potato as a whole? (3 marks)

A yeast cell buds once every 2 hours, and each bud also starts budding. Starting with 1 cell, how many cells will there be after 8 hours? (3 marks)

In a garden survey, 40 flowers were examined: 28 were bisexual and the rest unisexual. Find the percentage of unisexual flowers. (3 marks)

A pea pod has 8 ovules, and 6 of them are fertilised. How many seeds will form? What percentage of ovules formed seeds? (3 marks)

Classify 9 fruits or seeds by method of dispersal: maple, coconut, Xanthium, castor, dandelion, lotus, Urena, balsam, drumstick. Count how many are dispersed by wind. (3 marks)

Read the passage and answer the questions. Paheli kept a piece of bread in a moist, warm place. After a few days, she saw cottony threads with black dots. (i) What is the growth? (ii) What are the black dots? (iii) How did the fungus reach the bread? (5 marks)

Read the passage and answer the questions. A gardener planted a stem cutting of rose with a node in moist soil. After two weeks, roots and new leaves appeared. (i) What method of propagation is this? (ii) Why must the cutting have a node? (iii) Name one more plant grown this way. (5 marks)

Read the passage and answer the questions. In a maize field, the tassels at the top release large amounts of light pollen that blows away in the wind. (i) What type of pollination occurs? (ii) Why is so much pollen produced? (iii) Is the maize flower unisexual or bisexual? (5 marks)

Read the passage and answer the questions. Boojho found tiny seeds with fluffy hair floating in the air near a madar plant. (i) How are these seeds dispersed? (ii) Which feature helps? (iii) Why is dispersal useful to the plant? (5 marks)

Read the passage and answer the questions. A pond turned green with long slimy threads. When the teacher broke the threads, each piece grew into a new thread. (i) Name the alga. (ii) Name the method of reproduction. (iii) What conditions help it grow fast? (5 marks)

Draw a labelled diagram of a flower and explain the function of each reproductive part. (6 marks)

Explain four methods of asexual reproduction in plants with one example and a diagram each. (6 marks)

Describe the process of fertilisation and seed formation with labelled diagrams. (6 marks)

Explain four methods of seed dispersal with two examples each and sketches of any two seeds. (6 marks)

Compare self-pollination and cross-pollination with labelled diagrams and list the agents of cross-pollination. (6 marks)