Class 8: Biology Chapter 2 solutions. Complete Class 8 Biology Chapter 2 Notes.
Selina Class 8 ICSE Solutions Biology : Chapter 2- Reproduction in Plants
Selina 8th Biology Chapter 2, Class 8 Biology Chapter 2 solutions
Multiple Choice Questions:
1. Put a tick mark against the correct alternative in the following statements:
(a) Pollen is produced in the:
1. Filament
2. Style
3. Pistil
4. Anther
Answer: 4. Anther
(b) Reproductive whorls of a flower are:
1. Stamens and carpels
2. Sepals and petals
3. Sepals and stamens
4. Petals and carpels
Answer: 1. Stamens and carpels
(c) Grafting is a method of:
1. Artificial vegetative propagation
2. Sexual reproduction
3. Artificial pollination
4. Cross-pollination
Answer: 1. Artificial vegetative propagation
(d) Which one of the following is a false fruit?
1. Tomato
2. Apple
3. Potato
4. Pea
Answer: 2. Apple
Short Answer Questions:
Question 1.
Write two ways in which pollination may occur in plants.
Solution:
(a) Self-pollination.
(b) Cross-pollination.
Question 2.
Name the three agents of pollination.
Solution:
The three agents of pollination are:
(a) Insect
(b) Wind
(c) Water
Question 3.
Give two features of flowers which favour pollination by insects.
Solution:
Specialities of insect-pollinated flowers:
(a) These flowers are large with coloured petals to attract insects.
(b) The smell of the flower attracts insects.
Question 4.
Name two characteristics of flowers in which pollination occurs by wind.
Solution:
Special features of wind-pollinated flowers:
(a) They produce light pollen so that it is easily carried away.
(b) A large amount of pollen is produced.
Question 5.
What is a ‘false fruit’? Give one example:
Solution:
The base of the flowers (thalamus) in false fruits becomes the main fleshy part of the fruit, while the ovary remains a small central part containing seeds. Example: Apple and Pear.
Question 6.
Name any three agencies for dispersal of seeds.
Solution:
a. Wind
b. Water
c. Man and animals, birds, bats, squirrels.
Question 7
Fill in the blanks by selecting suitable words:
(unisexual, fertilisation, fruit, stamen, anther, bisexual, pollination, seed, ovary)
Solution:
a. A flower that bears both the male and the female parts is known as bisexual flower.
b. A flower bearing only male or female parts is known as unisexual flower.
c. Transfer of pollen grains from the anther to the stigma is known as pollination.
d. Fusion of male cell with the female cell is called fertilisation.
e. The ovule develops into a seed.
f. The ovary of the flower develops into a fruit.
Long Answer Questions:
Question 1:
1. What is vegetative reproduction?
Solution:
Vegetative reproduction: In this method, the vegetative parts of the plants produce new plants. The vegetative part means the leaf, stem and root. Potato, mint, ginger, banana etc. are reproduced by this method.
- Vegetative propagation can occur by natural methods as well as by artificial methods
- The natural method includes reproduction by the stem, by roots and by leaves.
- The artificial method includes reproduction by cutting, layering, grafting and tissue culture.
Question 2
Briefly explain why a gardener prefers to grow certain plants vegetatively?
Solution:
Gardener prefers to grow certain plants by the vegetative method. The advantages of doing so are as follows:
1. In a shorter time, Reproduction by vegetative parts takes place.
2. New plants, thus produced, spread very fast in a small area.
3. It is a surer method.
4. All the characters of the mother plant are retained by the daughter plants.
Download PDF
Selina Class 8 ICSE Solutions Biology : Chapter 2- Reproduction in Plants
Download PDF: Selina Class 8 ICSE Solutions Biology : Chapter 2- Reproduction in Plants PDF
Chapterwise Selina Publishers ICSE Solutions for Class 8 Biology :
- Chapter 1- Transportation in Plants
- Chapter 2- Reproduction in Plants
- Chapter 3- Reproduction in Humans
- Chapter 4- Ecosystem
- Chapter 5- Endocrine System and Adolescence
- Chapter 6- The Circulatory System
- Chapter 7- The Nervous System
- Chapter 8- Disease and First Aid
About Selina Publishers ICSE
Selina Publishers has been serving the students since 1976 and is one of the quality ICSE school textbooks publication houses. Mathematics and Science books for classes 6-10 form the core of our business, apart from certain English and Hindi literature as well as a few primary books. All these books are based upon the syllabus published by the Council for the I.C.S.E. Examinations, New Delhi. The textbooks are composed by a panel of subject experts and vetted by teachers practising in ICSE schools all over the country. Continuous efforts are made in complying with the standards and ensuring lucidity and clarity in content, which makes them stand tall in the industry.