English
Maharashtra State BoardSSC (English Medium) 10th Standard

Give any two examples of agents of pollination.

Advertisements
Advertisements

Question

Give any two examples of agents of pollination.

Very Short Answer
Advertisements

Solution

Examples of agents of pollination are:

  1. Insect pollination: Bees are the most common and recognized insect pollinators.
  2. Bird pollination: Plants are pollinated by some birds, particularly hummingbirds.
shaalaa.com
  Is there an error in this question or solution?
2021-2022 (March) Set 1

APPEARS IN

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Match the following:

Column A Column B
(i) Stigma (a) Neuron
(ii) Pepsin (b) Carpel
(iii) Dendrites (c) Protein
(d) Stamen

 


How does fertilisation occur in flowers? Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilisation.


Name the parts labelled as A, B, C and D in the diagram given below:


What are the reproductive organs in a flower?


Fill in the following blank with suitable word :

The ovule becomes a .......... after fertilisation.


Fill in the following blank with suitable word :

The.......... at the base of the carpel contains egg cells.


What type of plants reproduce by sexual reproduction method?


What is seed? What are the parts of a seed? Explain with the help of a labelled diagram.


What is pollination? How does pollination occur?


Describe the process of fertilisation in a flower with the help of labelled diagrams.


Which of the following statements are true for sexual reproduction in flowering plants?
(i) it requires two types of gametes
(ii) fertilisation is a compulsory event
(iii) it always results in the formation of zygote
(iv) offsprings formed are clones

(a) (i) and (iv)
(b) (i), (ii) and (iv)
(c) (i), (ii) and (iii)
(d) (ii), (iii) and (iv)


Fill in the blanks:

A carpel consists of ________ , ________ and ________.


The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :

A. Soak the seeds in plain water and keep them overnight.

B. Cut open the soaked seed and observe its different parts.

C. Take some healthy seeds in a petri-dish.

D. 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) C, A, D, B

(b) C, D, A, B

(c) A, C, D, B

(d) A, C, B, D


Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.


Explain the process of fertilisation in flowers.


In the figure, the parts marked A, B and C are sequentially:


(A) Plumule, Radicle and Cotyledon

(B) Radicle, Plumule and Cotyledon

(C) Plumule, Cotyledon and Radicle

(D) Radicle, Cotyledon and Plumule


Identify the odd. Stigma, Style, Pollen, Ovary.


Calyx : Sepals : : Corolla : ________________


Pollen grains from anther are transferred to the stigma.


Write the functions of sepals


Draw a neat and labelled diagram.

Double fertilization in angiosperms


The male reproductive part of a flower is ______.


Match the following

1. Petal Opuntia
2. Fern Chrysanthemum
3. Phylloclade Attracts insect
4. Hooks Spore
5. Sucker Bignonia

Write the events involved in the sexual reproduction of a flowering plant.

Discuss the first event and write the types.


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.


Which of the following are the chemical components of the wall of pollen tube?


Sperm and egg nuclei fuse due to ______.


What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?


Conidia are formed endogenously while zoospores are formed endogenously.


Which out of the following processes does not lead to the formation of clones.


Which among the following statements are true for sexual reproduction in flowering plants?

  1. It requires two types of gametes
  2. Fertilisation is a compulsory event
  3. It always results in formation of zygote
  4. Offspring formed are clones

Give reason for the following:

Fertilization cannot take place in flowers if pollination does not occur.


State the number of sets of chromosomes present in a zygote.


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.


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.


Given below is a diagram of a germinating seed. Label the parts that:

  1. gives rise to future shoot.
  2. gives rise to future root system.
  3. stores food. 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×