Advertisements
Advertisements
Question
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
Advertisements
Solution
The female reproductive organ of a flower is carpel.
APPEARS IN
RELATED QUESTIONS
(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?
Name the parts A, B and C shown in the following diagram and state one function of each.
A student identified the various parts of an embryo of a gram seed and listed them as given below :
(I) Testa
(II) Plumule
(III) Radicle
(IV) Cotyledon
(V) Tegmen
Out of these the actual parts of the embryo are :
(A) I, II, III
(B) II, III, IV
(C) III, IV, V
(D) II, IV, V
Name the swollen lower part of the carpel.
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
The correct sequence of reproductive stages occurring in flowering plants is ______
When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube b from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of d contained in structure E. the fusion of C and D forms a new cell f which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F?
Put a tick mark (✓) against the correct alternative in the following statement
Pollen is produced in the:
Multiple choice question. Tick (✓) the correct choice:
The male gamete is present inside the which germinates.
- the style
- the stigma
- the anther
- the ovary
State whether the following statement is true (T) or false (F):
Stamens make egg cells.
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
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
Draw a diagram of the longitudinal section of a flower and label the following parts.
Answer the following question.
List two agents of pollination?
What does germination mean?
Give scientific reason.
Fertilization in plants is called double fertilization.
Draw a neat and labelled diagram.
Double fertilization in angiosperms
Which of the following are the chemical components of the wall of pollen tube?
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
State the post-fertilisation changes that lead to fruit formation in plants.
