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Question
Draw a neat and labelled diagram.
Double fertilization in angiosperms
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Solution
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RELATED QUESTIONS
A student was asked to observe and identify the various parts of an embryo of a red kidney bean seed. He identified the parts and listed them as under:
I. Tegmen
II. Testa
III. Cotyledon
IV. Radicle
V. Plumule
The correctly identified parts among these are
(A) I, II and III
(B) II, III and IV
(C) III, IV and V
(D) I, III, IV and V
What is pollination?
The fusion of male and female gametes is termed as ______.
How does the process of fertilisation take place in flowers?
The process of fusion of the male and female gametes is called ______.
Mature ovary forms the ______.
State the name of the functional unit concerned with sexual reproduction.
Where are a plant's sex organs located?
What is the name of female part of a flower?
Where is the male gamete formed in flowering plants?
Where is the female gamete formed in flowering plants?
Fill in the following blank with suitable word :
The.......... at the base of the carpel contains egg cells.
What is made in anther of a flower?
Explain the terms 'self pollination'
How does pollination occur?
The length of pollen tube depends on the distance between :
(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style
Multiple choice question. Tick (✓) the correct choice:
The male gamete is present inside the which germinates.
- the style
- the stigma
- the anther
- the ovary
Fill in the blank:
Seeds are formed from________.
State whether the following statement is true (T) or false (F):
Stamens make egg cells.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
What is meant by pollination?
Bisexual : Hibiscus : : Unisexual : ___________
Give scientific reason.
Flower is a structural unit of sexual reproduction in plants.
Distinguish between self-pollination and cross-pollination.
The essential parts of a flower are ______.
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
Write the events involved in the sexual reproduction of a flowering plant.
a. Discuss the first event and write the types.
b. Mention the advantages and the disadvantages of that event.
Antipodal cells are present towards the ______ in an anatropous ovule.
Which of the following is the outermost protective layer of anther?
Identify the female gametophyte in angiosperms.
Flowers showing ornithophily show few characteristic like ______.
Pineapple fruit develops from ______.
In human beings, fertilization occurs in the ______
Which out of the following processes does not lead to the formation of clones.
State the number of sets of chromosomes present in a zygote.
Sketch and label the essential and accessory whorls of flower.
What are the agents for pollination?
Triple fusion involves ______.
Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit?
| Flower X | Flower Y | Flower Z |
 |
 |
 |
The number of pollen sacs in a dithecous anther is ______.
