Advertisements
Advertisements
प्रश्न
Name the part made up of the stigma, style and ovary.
Advertisements
उत्तर
Pistil contains stigma, style and ovary.
APPEARS IN
संबंधित प्रश्न
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?
Name and differentiate between the two modes of pollination in flowering plants.
Give one example of a unisexual flower.
Mention the changes a flower undergoes after fertilisation.
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
How is the process of pollination different from fertilization?
The process of fusion of the male and female gametes is called ______.
What is the function of a flower?
Fill in the following blank with suitable word :
The name of the structure in the flower in which the male gamete is formed is...........
(a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
(b) What name is given to (i) all the petals of a flower, and (ii) all the sepals of a flower?
(c) What are (i) stamen, and (ii) carpel, in a flower?
(d) What is the other name of carpel of a flower?
(e) What is the name of yellow powdery substance present in the anther of a flower?
The length of pollen tube depends on the distance between :
(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style
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
Put a tick mark (✓) against the correct alternative in the following statement
Reproductive whorls of a flower are:
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Multiple choice question. Tick (✓) the correct choice:
The male gamete is present inside the which germinates.
- the style
- the stigma
- the anther
- the ovary
What part is played by stamens and carpels in reproduction?
Explain the process of fertilisation in flowers.
Identify the odd. Stigma, Style, Pollen, Ovary.
Prepare a slogan for campaign against female foeticide.
Mention pollination types.
Answer the following question.
How does suitable pollination lead to fertilization?
Pollen grains are formed by _________ division in locules of anthers.
Find an odd one out.
Pollen grains from anther are transferred to the stigma.
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
The essential parts of a flower are ______.
Write the events involved in the sexual reproduction of a flowering plant.
Discuss the first event and write the types.
In which part of the flower germination of pollen grains takes place?
Which type of development is observed in male gametophytes of plants?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
Flowers showing ornithophily show few characteristic like ______.
Pineapple fruit develops from ______.
Conidia are formed endogenously while zoospores are formed endogenously.
Complete the table
| Carly x | ______ | ______ |
| ______ | petal | attract insects |
| Androecium | ______ | Male reproductive part |
| ______ | ______ | Female reproductive part. |
State the number of sets of chromosomes present in a zygote.
Sketch and label the essential and accessory whorls of flower.
Type of sexual reproduction is ______.
State the post-fertilisation changes that lead to fruit formation in plants.
