Advertisements
Advertisements
Question
What is the function of calyx?
Advertisements
Solution
The main function of calyx is to protect the inner whorls of the flower.
APPEARS IN
RELATED QUESTIONS
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
Name the parts labelled as A, B, C and D in the diagram given below:-
What is pollination?
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?
State significance of pollination.
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
How is the process of pollination different from fertilization?
A flower may have either male or female reproductive parts. Such a flower is called ______.
Name the part made up of the stigma, style and ovary.
Where are the pollen grains produced?
Where are a plant's sex organs located?
What is the name of female organ of a flower (other than carpel)?
Where is the female gamete formed in flowering plants?
Name the part of a seed which grows into root.
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
Which among the following statements are true for unisexual flowers?
(i) They possess both stamen and pistil
(ii) They possess either stamen or pistil
(iii) They exhibit cross pollination
(iv) Unisexual flower possessing only stamens cannot produce fruits
(a) (i) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (i), (iii) and (iv)
Which of the following statements are true for sexual reproduction in flowering plants?
(i) it requires two types of gametes
(ii) fertilisation is a compulsory event
(iii) it always results in the formation of zygote
(iv) offsprings formed are clones
(a) (i) and (iv)
(b) (i), (ii) and (iv)
(c) (i), (ii) and (iii)
(d) (ii), (iii) and (iv)
The correct sequence of reproductive stages occurring in flowering plants is ______
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Mention the function of Stigma.
What are the male and female gametes in a flowering plant?
A student is asked to study the different parts of an embryo of pea seeds. Given below are the essential steps for the experiment :
(I) Soak the pea seeds in plain water and keep them overnight.
(II) Cut open the soaked seed and observe its different parts.
(III) Take some pea seeds in a petri dish.
(IV) Drain the excess water. Cover the seeds with a wet cotton cloth and leave them as it is for a day.
The correct sequence of these steps is
(A) III, I, IV, II
(B) III, IV, I, II
(C) III, I, II, IV
(D) III, II, I, IV
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Describe an activity to demonstrate phototropism.
List any two differences between pollination and fertilization.
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
What is meant by pollination?
Find the odd one out:
Which of the following are the chemical components of the wall of pollen tube?
Generally, in a pollen tube, which of the following moves to the tip of the tube?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
The seed that contains the future plant is called the ______
Pollen grains are produced by ______
Which among the following statements are true for unisexual flowers?
- They possess both stamen and pistil
- They possess either stamen or pistil
- They exhibit cross pollination
- Unisexual flowers possessing only stamens cannot produce fruits
Where is the zygote located in the flower after fertilization?
What are the agents for pollination?
Triple fusion involves ______.
Type of sexual reproduction is ______.
