Advertisements
Advertisements
प्रश्न
Which of the following is not an unisexual flower?
a) Coconut
b) Papaya
c) Gulmohor
d) Maize
Advertisements
उत्तर
c) Gulmohor
APPEARS IN
संबंधित प्रश्न
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
Name the parts A, B and C shown in the diagram and write their functions.
What is pollination?
You are asked by your teacher to study the different parts of an embryo of a gram seed. Given below are the steps to be followed for the experiment:
I. Soak the gram seeds in plain water and keep them overnight.
II. Cut open a soaked seed and observe its different parts.
III. Take some dry gram seeds in a petri dish.
IV. Drain the excess water.
V. Cover the soaked seeds with a wet cotton cloth and leave them for a day.
The correct sequence of these steps is :
(A) III, I, V, IV, II
(B) III, I, II, IV, V
(C) III, IV, V, I, II
(D) III, I, IV, V, II
Mature ovary forms the ______.
State the name of the functional unit concerned with sexual reproduction.
Name the swollen lower part of the carpel.
Name the male part of the flower.
Where are the pollen grains produced?
Where are a plant's sex organs located?
Where is the female gamete formed in flowering plants?
Fill in the following blank with suitable word :
Ovules contain ......... gametes of a plant.
Name the part of a seed which grows into root.
What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Fill in the blank:
Seeds are formed from________.
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
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.
Identify the odd. Stigma, Style, Pollen, Ovary.
Bisexual : Hibiscus : : Unisexual : ___________
Pollen tube reaches the embryo sac via style.
What does germination mean?
Write the events involved in the sexual reproduction of a flowering plant.
a. Discuss the first event and write the types.
b. Mention the advantages and the disadvantages of that event.
Where does the endothecium layer of anther lobes is present?
The ovule of an angiosperm is technically equivalent to ______
Which of the following are the chemical components of the wall of pollen tube?
Identify the female gametophyte in angiosperms.
Pineapple fruit develops from ______.
In a bisexual flower inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation.
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
The ovaries of different flowers may contain ______.
Sketch and label the essential and accessory whorls of flower.
In a plant flower the female whorl is ______.
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
What is puberty?
In flowering plants, the pollen grains are transferred to stigma by pollination but the female germ cells are present in the ovary.
Explain with the help of a labelled diagram (only concerned parts), how the male germ cell reaches the ovary.
Explain the post fertilization changes that occur in the ovary of a flower.
