Samacheer Kalvi 7th Science Term 1 Unit 5 Book Back Question and Answers:

Samacheer Kalvi 7th Standard Science Book Back 1 Mark and 2 Mark Question & Answers uploaded online and available PDF for free download. Class 7th New Syllabus Science Term 1 book back question & answer solutions guide available below for English Medium. Class Seventh Std Science English Medium Term 1 Unit 5 Reproduction and Modification in Plants book back answers given below. Students looking for class 7th Term I Unit 5 Questions and Answers can check below.

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Samacheer Kalvi 7th Science Book Back Term 1 Unit 5 Solution Guide PDF:

Science Subject 1 Mark and 2 Mark Solutions Guide PDF available below. Click the Download option to download the book back 1 Mark & 2 Mark questions and answers. Take the printout and use it for exam purposes.

Science – Term 1

Unit 5 Reproduction and Modification in Plants

I. Choose the appropriate answer:

1. Vegetative propagation by leaves takes place in
(a) Bryophyllum
(b) Fungi
(c) Virus
(d) Bacteria
Answer:
(a) Bryophyllum

2. Asexual reproduction in yeast is
(a) Spore formation
(b) Fragmentation
(c) Pollination
(d) Budding
Answer:
(d) Budding

3. Reproductive part of a plant is
(a) Root
(b) Stem
(c) Leaf
(d) Flower
Answer:
(d) Flower

4. Pollinators are
(a) Wind
(b) Water
(c) Insect
(d) All the above
Answer:
d) All the above

5. Climbing roots are seen in
(a) Betel
(b) Black pepper
(c) Both of them
(d) None of them
Answer:
(c) Both of them

II. Fill in the blanks :

1. The male reproductive part of a flower is __________
2. __________ is the basal swollen part of the Gynoecium.
3. After fertilization the ovule becomes __________
4. Breathing roots are seen in __________ plants.
5. Onion and Garlic are example of __________

Answer:

1. Androecium
2. Ovary
3. seed
4. mangrove
5. Bulb

III. True (or) False, write the correct answer for the false statement.

1. A complete flower has four whorls.
Answer:
True

2. The transfer of pollen to the stigma is known as pollination.
Answer:
True

3. Conical-shaped root is a carrot.
Answer:
True

4. Ginger is an underground root.
Answer:
(False) Correct Statement: Ginger is an underground stem.

5. Leaves of Aloe vera are fleshy and store water.
Answer:
True

IV. Match the following :

Answer:

1 – c; 2 – d; 3 – a; 4 – e; 5 – b

V. Very short answers.

1. Write two types of reproduction in plants.
Answer:
Sexual and Asexual Reproduction.

2. What are the two important parts of a flower?
Answer:
Androecium and Gynoecium.

3. Define – pollination.
Answer:
Transfer of pollen grains from the anther to stigma is called pollination.

4. What are the agents of pollination?
Answer:
Insects, wind, water, animals.

5. Give example for
(a) Corm
(b) Tuber
Answer:

1. Corm-e.g Colocasia
2. Tuber – e.g Potato.

6. What is tendril?
Answer:

1. It is an elongated structure produced by the plant to help the plants to climb efficiently.
2. g In pea, the terminal leaflets are modified into a tendril.

7. What are thorns?
Answer:

1. Thoms are pointed and sharp structures formed in a plant.
2. Leaves and other parts may be modified into thorns.
3. It helps the plant safeguard itself from animals. Thoms may also help in climbing.

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