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प्रश्न
__________ is present in unisexual flower.
विकल्प
Both androecium and gynoecium
Only androecium
Only gynoecium
Androecium or gynoecium
उत्तर
Androecium or gynoecium is present in unisexual flower.
APPEARS IN
संबंधित प्रश्न
Name the parts A, B and C shown in the diagram and write their functions.
Name the parts labelled as A, B, C and D in the diagram given below:-
How does fertilisation occur in flowers? Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilisation.
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
A flower may have either male or female reproductive parts. Such a flower is called ______.
The process of fusion of the male and female gametes is called ______.
Where is the female gamete formed in flowering plants?
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
Fill in the following blank with suitable word :
The female organ of reproduction in the flower is the...........
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
What is made in anther of a flower?
What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.
What is pollination? How does pollination occur?
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.
In what ways is fertilisation in a plant similar to fertilisation in a human?
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
Fill in the blanks:
A carpel consists of ________ , ________ and ________.
Identify A, B, C and D in the given diagram and write their names.
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
“Cell division is a type of reproduction in unicellular organism.” Justify.
Write the names of male and female reproductive parts of a flower.
Describe an activity to demonstrate phototropism.
List any two differences between pollination and fertilisation.
Prepare a slogan for campaign against female foeticide.
Pollen grains are formed by _________ division in locules of anthers.
Bisexual : Hibiscus : : Unisexual : ___________
Accessory whorls : Calyx and corolla : : essential whorls : ______________
Give scientific reason.
Fertilization in plants is called double fertilization.
The 3-celled egg apparatus at the micropylar end comprises of ______
The seed that contains the future plant is called the ______
The process of release of eggs from the ovary is called ______
In human beings, fertilization occurs in the ______
The ovaries of different flowers may contain
Sketch and label the essential and accessory whorls of flower.
Explain the post fertilization changes that occur in the ovary of a flower.
- Assertion: Primary endosperm nucleus is diploid.
- Reason: It is the product of double fertilisation.
