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SCIENCE (X) HOW DO ORGANISMS REPRODUCE |
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MULTIPLE CHOICE QUESTIONS (MCQs) |
|
1 |
In which of
the following organisms, multiple fission is a means of asexual reproduction? (a) Yeast (b)
Leishmania (c)
Paramecium (d)
Plasmodium |
1 |
|
2 |
The organism
in which an outgrowth on the parent body develops into a new individual is: (a) Amoeba (c) Rhizopus (b)
Paramecium (d) Yeast |
1 |
|
3 |
The plants
that can be raised by the method of vegetative propagation are (a)
sugarcane, roses, grapes (b)
sugarcane, mustard, potato (c) banana,
orange, mustard (d) papaya,
mustard, potato. |
1 |
|
4 |
Fertilisation
is the process of (a) transfer
of male gamete to female gamete (b) fusion
of nuclei of male and female gamete (c) adhesion
of male and female reproductive organs (d) the
formation of gametes by a reproductive organ. |
1 |
|
5 |
Seeds are
called products of sexual reproduction because they (a) give
rise to new plants (b) are
formed by fusion of gametes (c) are
formed by the fusion of pollen tubes (d) can
survive for a longer period. |
1 |
|
6 |
The stamen
contains (a) stigma (b) pollen
grain (c) sepal (d) ovule |
1 |
|
7 |
The part of
seed which is a source of food during germination of seed is (a) cotyledon (b) radicle (c) plumule (d) embryo |
1 |
|
8 |
Which one of
the following is not a part of the human female reproductive system? (a) Ovary (b) Oviduct (c) Uterus (d) Seminal
vesicle |
1 |
|
9 |
Which of the
following techniques is used as a contraceptive method in males only? (a) Copper-T (b) Oral
pills (c) Blockage
of fallopian tube (d) Blockage
of vas deferens |
1 |
|
10 |
The
bacterial and the viral infections that may be caused due to unsafe sex
respectively are (a) Warts
and HIV-AIDS (b) HIV-AIDS
and Warts (c)
Gonorrhoea and Syphilis (d) Syphilis
and Warts. |
1 |
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ASSERTION AND REASON QUESTIONS (a) Both Assertion (A) and Reason (R) are true and
Reason (R) is the correct explanation of the Assertion (A). (b) Both Assertion (A) and Reason (R) are true and
Reason (R) is not the correct explanation of the Assertion (A). (c) Assertion (A) is true, and Reason (R) is
false. (d) Assertion (A) is false, and Reason (R) True. |
|
11 |
Assertion (A): Female germ cells are larger than male
germ cells. Reason (R): Female germ cells contain the food reserves. |
1 |
|
12 |
Assertion (A): Probability of survival of an organism
produced through sexual reproduction is more than that of organism produced
through asexual mode. Reason (R): Variations provide advantages to individuals for
survival. |
1 |
|
13 |
Assertion (A): Testes are located outside the abdominal
cavity in the scrotum. Reason (R): Because sperm formation requires lower
temperature than the normal body temperature. |
1 |
|
14 |
Assertion (A): Amoeba always produces two daughter
amoebae while Plasmodium divides into many daughter cells. Reason (R): Amoeba undergoes binary fission while Plasmodium
undergoes multiple fission. |
1 |
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VERY SHORT ANSWER QUESTIONS |
|
15 |
What is regeneration?
Explain the process of regeneration in Planaria. |
2 |
|
16 |
Which one of
the two multicellular organisms Spirogyra and Planaria reproduces by
regeneration and why? Give an example of any other organism which can also
reproduce by the same process. |
2 |
|
17 |
Mention the
changes that occur in the following after fertilisation in a flower: (a) Petals (c) Ovary (b) Zygote (d) Ovule |
2 |
|
18 |
What are
testes ? List two functions performed by testes in human beings. |
2 |
|
19 |
What is
puberty? Mention any two changes that are common to both boys and girls in
early teenage years. |
2 |
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SHORT ANSWER TYPE QUESTIONS |
|
20 |
Explain
budding in Hydra with the help of labelled diagrams only. |
3 |
|
21 |
In the
context of reproduction of species state the main difference between fission
and fragmentation. Also give one example of each. |
3 |
|
22 |
What is
multiple fission? How does it occur in an organisms? Explain briefly. Name
one organism which exhibits this type of reproduction. |
3 |
|
23 |
Explain with
the help of a labelled diagram, the process of reproduction in Hydra by
budding. Name the cells used for reproduction in this process |
3 |
|
24 |
List any two
steps involved in sexual reproduction and write its two advantages. |
3 |
|
25 |
State the
basic requirement for sexual reproduction. Write the importance of such
reproductions in nature. |
3 |
|
26 |
What is vegetative propagation? State two advantages and
disadvantages of this method. |
3 |
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LONG ANSWER TYPE QUESTIONS |
|
27 |
(i)Name and
explain the two modes of asexual reproduction observed in Hydra. (ii) What is
vegetative propagation? List two advantages of using this technique. |
5 |
|
28 |
(a) Name the
mode of reproduction of the following organisms and state the important
feature of each mode: (i)Planaria (ii) Hydra (iii) Rhizopus (b) We can
develop new plants from the leaves of Bryophyllum. Comment. (c) List two
advantages of vegetative propagation over other modes of reproduction |
5 |
|
29 |
(a)
Distinguish between cross-pollination and self-pollination. Mention the site
and product of fertilisation in a flower. (b) Draw
labelled diagram of a pistil showing the following parts: Stigma,
Style, Ovary, Female germ cell. |
5 |
|
30 |
(i) Draw a
diagram showing spore formation in Rhizopus and label the (a)
reproductive (b)
non-reproductive parts. (ii)Why does
Rhizopus not multiply on a dry slice of bread? (iii) Name
and explain the process by which reproduction takes place in Hydra. |
5 |
|
31 |
Define
pollination. Explain the different types of pollination. List two agents of pollination.
How does suitable pollination lead to fertilisation? |
5 |
|
32 |
(a) Identify
the modes of asexual reproduction in each of the following organisms: (i) Hydra (ii)
Planaria (iii) Amoeba (iv)
Spirogyra (v) Rhizopus (b) List
three advantages of vegetative propagation. (c) Why
cannot fertilisation take place in flowers if pollination does not occur? |
5 |
|
33 |
(i)Draw a
neat diagram showing fertilisation in a flower and label (a) pollen
tube (b) Male
germ cell (c) Female
germ cell on it. (ii)Explain
the process of fertilisation in a flower. What happens to the (a) ovary (b) ovule
after fertilisation |
5 |
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CASE BASED STUDY QUESTIONS |
|
34 |
Read the passage carefully and answer the
following questions: Riya kept a
potato on her kitchen shelf. After a week, she observed small outgrowths
developing on its surface. She asked her teacher and came to know that these
are called “eyes” and can grow into new plants under suitable conditions. 1. Name the
mode of reproduction seen in potato. 2. Why are
the outgrowths on potato called “eyes”? 3. State one
advantage and one disadvantage of this method of reproduction. 4. Give one
more example of a plant that reproduces by the same method. 5. Is the
new plant formed identical or different from the parent plant? Why? |
4 |
|
35 |
Read the passage carefully and answer the
following questions: During a
biology class, the teacher explained that in humans, the male gamete is
motile while the female gamete is non-motile. Fertilisation usually takes
place inside the female body, in a specific part of the reproductive system. 1. Name the
male and female gametes in humans. 2. Where
does fertilisation take place in the female reproductive system? 3. What is
the significance of sexual reproduction over asexual reproduction? 4. Write the
function of the placenta in human development. 5. What
happens to the egg if it is not fertilised? |
4 |
|
36 |
Read the passage carefully and answer the
following questions: A farmer
grew sunflower plants in his field. He noticed that flowers attracted many
bees and butterflies. These insects helped in the transfer of pollen from one
flower to another, leading to seed and fruit formation. 1. What is
the role of insects in reproduction of sunflower? 2. Define
cross-pollination. 3. How does
fertilisation occur in flowering plants? 4. State one
advantage of cross-pollination over self-pollination. 5. What is
the ploidy (haploid/diploid) of zygote and endosperm formed in the ovule? |
4 |
|
37 |
Read the passage carefully and answer the
following questions: In a health
awareness programme, doctors advised people to adopt suitable contraceptive
methods to avoid unwanted pregnancies and control population growth. 1. Name any
two natural methods of contraception. 2. Write one
advantage of using condoms. 3. Which
contraceptive method prevents ovulation? 4. Why is
use of contraceptives important for both health and society? 5. Give one
difference between surgical and chemical methods of contraception. |
4 |
FOLLOW THE INSTRUCTIONS FOR DOWNLOAD THIS ASSIGNMENT:
1. SEARCH WWW.SCIENCEARENA.IN
2. OPEN EDUCATION AND RESOURCES IN MENU BAR.
3. SINGLE CLICK DOWNLOAD AVAILABLE IN DOWNLAOD SECTION.
https://www.sciencearena.in/p/education-resources.html