State TRUE or FALSE1. Budding can produce several individuals at a time.2.Stock is inserted into scion for grafting.3. Pollination cannot take place before fertilization.4. Pollen grains fuse with egg cell to produce zygote.5. Stamens are the female parts of a flower.

Academic Biology NCERT Class 7

Correct answer of True and False:

1. True

2. False

3. True

4. True

5. False

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Updated on: 30-Mar-2023

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(a) Draw a diagram showing germination of pollen on the stigma of a flower and mark on it the following organs/parts :(i) Pollen Grain(ii) Pollen tube(iii) Stigma(iv) Female germ cell(b) State the significance of the pollen tube.(c) Name the parts of the flower that develop after fertilization into(i) Seed(ii) Fruit
Define the terms pollination and fertilization. Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following: pollen grain, male gamete, female gamete and ovary.
(a) Distinguish between cross-pollination and self-pollination. Mention the site and product of fertilization in a flower.(b) Draw labelled diagram of a pistil showing the following parts:Stigma, Style, Ovary, Female germ cell
Fill in the blanks:(a) The production of new individuals from the vegetative part of the parent is called _____.(b) A flower may have either male or female reproductive parts. Such a flower is called _______.(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _____.(d) The fusion of male and female gametes is termed as _____.(e) Seed dispersal takes place by means of _____, _____, and _____.
DIRECTIONS: Read the passage(s) given below and answer the questions that follow. Passage- The cell which results after fusion of gametes is called a zygote. The fusion of male and female gametes (to form a zygote) is called fertilization. The zygote develops into an embryo. The cell which results after fusion of male gametes and female gametes is called(a) zygote(b) fertilization(c) embryo(d) none of these
DIRECTIONS: Read the passage(s) given below and answer the questions that follow. Passage- The transfer of pollen from another to the stigma of a flower is called pollination. If the pollen lands on the stigma of the same flower it is called self-pollination. When the pollen of a flower lands on the stigma of another flower of the same plant, or that of a different plant of the same kind, it is called cross-pollination. Which of the following can carry pollen grains?(a) wind.(b) water.(c) both wind and water.(d) none of these.
State whether the following statement is true or false:Non-metals react with dilute acids to produce a gas which burns with a pop sound.
Flowers reproduce using pollination and fertilization. Put the steps of these processes in order. Start with the first step of pollination, and end with the last step of fertilization.i) A seed is formed.ii) A grain of pollen combines with an ovule.iii) Pollinators land on a flower and some pollen gets stuck on the stigma.iv) A pollen tube grows down the style.v) Pollinators land on a flower and pick up pollen on their bodies.
In the last year board examination, Arun was asked a question where he had to choose the statement which was/were incorrect? Will you be able to answer this question?(a) The transfer of pollen grains from the anther of a stamen to the stigma of a pistil is called pollination.(b) The process in which the male gamete present in pollen grain fuses or joins with the female gamete present in the ovule to form a new cell called zygote, is called fertilization.(c) When a pollen grain falls on the stigma of a pistil, the pollen grain grows a pollen tube downwards through the style towards the female gamete in the ovary.(d) None of the above.
In a flower, the parts that produce male and female gametes are respectively:(a) sepal and anther (b) filament and stigma (c) anther and ovary (d) stamen and style
What are Pollen Grains?
Match the following:(a) Zygote(i) Reproductive organ(b) Sperm(ii) A clone(c) Flower(iii) Male gamete(d) Egg(iv) First cell of a new organism(e) Dolly(v) Female gamete
Stock and scion are involved in the artificial propagation method known s:(a) tissue culture (b) layering (c) grafting (d) cuttings
A hen's egg can be seen easily. Is it a cell or a group of a cell?

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