Advertisements
Advertisements
Question
Write the functions of sepals
Advertisements
Solution
Sepals are responsible for the protection of inner whorls.
APPEARS IN
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
The reproductive part of a plant is the ______.
Where are the pollen grains produced?
What is the function of a flower?
Where is the male gamete formed in flowering plants?
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
Fill in the following blank with suitable word :
The name of the structure in the flower in which the male gamete is formed is...........
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What is seed? What are the parts of a seed? Explain with the help of a labelled diagram.
Name the part of a seed which contains stored food.
In tobacco plant, the male gametes have 24 chromosomes.
What is the number of chromosomes in the female gamete?
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
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)
In the figure given alongside, the parts marked A, B and C are sequentially :
(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule
Fill in the blank by selecting suitable word:
A flower that bears both the male and the female parts is known as __________ flower.
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
Find the odd-one out, giving reason:
Anther, pollen grain, ovule male gamete
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
What is phototropism?
Describe an activity to demonstrate phototropism.
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
Explain sexual reproduction in plants.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Calyx : Sepals : : Corolla : ________________
Bisexual : Hibiscus : : Unisexual : ___________
The anther wall consists of four wall layers where ______
In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?
The ovule of an angiosperm is technically equivalent to ______
Antipodal cells are present towards the ______ in an anatropous ovule.
In human beings, fertilization occurs in the ______
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
Double fertilization is exhibited by ______
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.
