Question 11 Mark
Give one word/term for the following:
Pollination of flowers by birds.
Pollination of flowers by birds.
Answer
View full question & answer→Ornithophily
Questions
[1 Mark Question Answer]
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27 questions · timed · auto-graded
Question 21 Mark
Give one word/term for the following:
Pollination of flowers by insects.
Pollination of flowers by insects.
Answer
View full question & answer→Entomophily
Question 31 Mark
Give one word/term for the following:
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
Answer
View full question & answer→Heterostyly
Question 41 Mark
When maturation time of reproductive parts in a flower is different.
Answer
View full question & answer→Dichogamy
Question 51 Mark
Give one word/term for the following:
When pollen grains of a flower reach the stigma of the same flower.
When pollen grains of a flower reach the stigma of the same flower.
Answer
View full question & answer→Self-pollination/Autogamy
Question 61 Mark
Give one word/term for the following:
Arrangementof flowers on a twig/stem.
Arrangementof flowers on a twig/stem.
Answer
View full question & answer→Inflorescence
Question 71 Mark
Give one word/term for the following:
A flower containing both male and female parts.
A flower containing both male and female parts.
Answer
View full question & answer→Bisexual flower
Question 81 Mark
Name of the parts of the ovary which give rise to:
Fruit wall ______
Fruit wall ______
Answer
View full question & answer→Ovarian wall
Question 91 Mark
Name of the part of the ovary which gives rise to:
Fruit ______
Fruit ______
Answer
View full question & answer→Ovary
Question 101 Mark
Name of the part of the ovary which gives rise to:
Seed ______
Seed ______
Answer
View full question & answer→Ovules
Question 111 Mark
Given ahead is a diagrammatic representation of the process of fertilization. Study the same and then answer the question that follows:
What is the function of the synergids?
What is the function of the synergids?
Answer
View full question & answer→Synergidshelp in nourishing the egg cell, guiding the pollen tube towards the egg, properfunctioningof the pollen tube and release of sperm nuclei.
Question 121 Mark
Given ahead is a diagrammatic representation of the process of fertilization. Study the same and then answer the question that follows:
What happens to
i) Ovary
ii) Ovule after fertilisation
What happens to
i) Ovary
ii) Ovule after fertilisation
Answer
View full question & answer→After fertilization
(i) The ovary enlarges to form the fruit and the ovarian wall forms the fruit wall.
(ii) The ovule becomes the seed.
(i) The ovary enlarges to form the fruit and the ovarian wall forms the fruit wall.
(ii) The ovule becomes the seed.
Question 131 Mark
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
What is the function of the part labelled '4'?
What is the function of the part labelled '4'?
Answer
View full question & answer→The function of part '4' (tube nucleus) is to direct the growth of the pollen tube towards the ovary.
Question 141 Mark
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Where does the germination of the pollen grain take place and how?
Where does the germination of the pollen grain take place and how?
Answer
View full question & answer→Germination of the pollen grain takes place only after it falls on the stigma of the same plant species. The pollen grain is stimulated to germinate due to the secretion of sugars by the stigma.
Question 151 Mark
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Name the parts labelled 1, 2, 3, 4 and 5.
Name the parts labelled 1, 2, 3, 4 and 5.
Answer
View full question & answer→1 → Exine
2 → Intine
3 → Pollen tube
4 → Tube nucleus
5 → Generative nucleus
2 → Intine
3 → Pollen tube
4 → Tube nucleus
5 → Generative nucleus
Question 161 Mark
What happens to the following after fertilization?
Stamens
Stamens
Answer
View full question & answer→Stamens-Fall off
Question 171 Mark
What happens to the following after fertilization?
Petals
Petals
Answer
View full question & answer→Petals-Fall off
Question 181 Mark
What happens to the following after fertilization?
Calyx
Calyx
Answer
View full question & answer→Calyx-Falls off or remains intact in dried andshrivelledform
Question 191 Mark
What happens to the following after fertilization?
Ovules
Ovules
Answer
View full question & answer→Ovules-Seed
Question 201 Mark
Explain the following term:
Artificial pollination
Artificial pollination
Answer
View full question & answer→Artificial pollination-Pollination affected by man through artificial means.
Question 211 Mark
Explain the following term:
Elephophily
Elephophily
Answer
View full question & answer→Elephophily-Pollination affected by elephants
Question 221 Mark
Explain the Following Term:
Ornithophily
Ornithophily
Answer
View full question & answer→Ornithophily-Pollination affected by birds
Question 231 Mark
What are the advantages of the following in the flower to the plant concerned?
Fragrant nectar
Fragrant nectar
Answer
View full question & answer→Attracting insects for pollination
Question 241 Mark
What are the advantages of the following in the flower to the plant concerned?
Protruding and easily movable anthers
Protruding and easily movable anthers
Answer
View full question & answer→Even slightest wind can move them
Question 251 Mark
What are the advantages of the following in the flower to the plant concerned?
Smooth and light pollen
Smooth and light pollen
Answer
View full question & answer→Easily carried by wind to enable cross-pollination
Question 261 Mark
What are the advantages of the following in the flower to the plant concerned?
Brightlycolouredpetals
Brightlycolouredpetals
Answer
View full question & answer→Attracting insects for cross-pollination.
Question 271 Mark
What are the advantages of the following in the flower to the plant concerned?
Long and feathery stigma
Long and feathery stigma
Answer
View full question & answer→Help to trap pollen grains in wind-pollination.