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प्रश्न
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
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उत्तर
c) Gulmohor
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संबंधित प्रश्न
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
A student has to perform the experiment "To identify the different parts of an embryo of a dicot seed." Select from the following an appropriate group of seeds:
(a) Pea, gram, wheat
(b) Red kidney bean, maize, gram
(c) Maize, wheat, red kidney bean
(d) Red kidney bean, pea, gram
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
State the function of flowers in the flowering plants.
The fusion of male and female gametes is termed as ______.
Mature ovary forms the ______.
Name the male part of the flower.
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
What is made in anther of a flower?
How do the insects help in cross-pollination?
How is the process of pollination different from fertilization?
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
Mention the function of Flower.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Explain sexual reproduction in plants.
Answer the following question.
List two agents of pollination?
Calyx : Sepals : : Corolla : ________________
Pollen tube reaches the embryo sac via style.
What does germination mean?
Write the functions of sepals
Draw a neat and labelled diagram.
Double fertilization in angiosperms
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
Antipodal cells are present towards the ______ in an anatropous ovule.
Sperm and egg nuclei fuse due to ______.
Pollen grains are produced by ______
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
In a bisexual flower inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation.
What is the structural unit of sexual reproduction in plant?
What are the agents for pollination?
Triple fusion involves ______.
Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.
In male reproductive whorl of a flower the archesporial cells are formed by ______.
