NCERT Solutions Class 7 Science Chapter 12 Reproduction in Plants – Here are all the NCERT solutions for Class 7 Science Chapter 12. This solution contains questions, answers, images, explanations of the complete chapter 12 titled Reproduction in Plants of Science taught in class 7. If you are a student of class 7 who is using NCERT Textbook to study Science, then you must come across chapter 12 Reproduction in Plants. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 7 Science Chapter 12 Reproduction in Plants in one place.
NCERT Solutions Class 7 Science Chapter 12 Reproduction In Plants
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| Class | 7 |
| Subject | Science |
| Book | Science |
| Chapter Number | 12 |
| Chapter Name |
Reproduction In Plants |
NCERT Solutions Class 7 Science chapter 12 Reproduction In Plants
Class 7, Science chapter 12, Reproduction In Plants solutions are given below in PDF format. You can view them online or download PDF file for future use.
Reproduction In Plants
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Question & Answer
Q.1: Fill in the blanks:
(a) Production of new individuals from the vegetative part of parent is called_____________.
(b) A flower may have either male or female reproductive parts. Such a flower is called_____________.
(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _____________.
(d) The fusion of male and female gametes is termed as _____________.
(e) Seed dispersal takes place by means of _____________, _____________ and _____________.
Ans : (a) Production of new individuals from the vegetative part of parent is called vegetative propagation. (b) A flower may have either male or female reproductive parts. Such a flower is called unisexual. (c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as pollination. (d) The fusion of male and female gametes is termed as fertilisation. (e) Seed dispersal takes place by means of wind , water and animals.
Q.2: Describe the different methods of asexual reproduction. Give examples.
Ans : The various modes of asexual reproduction in plants are as follows: (i)Vegetative propagation: It is the ability of a plant to produce new plants from roots, stems, leaves, and buds. Vegetative propagation is divided into two types.
- Natural vegetative propagation: This type of vegetative propagation occurs easily in nature and involves simple vegetative parts. Potato plant sprouting from an eye is a common example.
- Artificial vegetative propagation: This type of vegetative propagation is performed manually and generally occurs in laboratory conditions. The formation of a complete plant from a stem cutting of rose is a common example of this method.
(ii)Budding:lt involves the formation of a new individual from a bulb-like projection called a bud. The bud grows and gets detached from the parent to form a new individual. It is commonly observed in yeast. (iii)Fragmentation:It is a form of asexual reproduction where a new organism is formed from the fragments of the parent body. It is the only mode of asexual reproduction in Spirogyra. (iv)Spore formation:Many non-flowering plants reproduce through spore formation. Spores are tiny cells protected by a thick wall. Fungi such as bread moulds reproduce asexually using this method.
Q.3: Explain what you understand by sexual reproduction.
Ans : Sexual reproduction is a process which involves production of seeds. It requires two parents. Most plants reproduce sexually with the help of flowers. The main function of a flower is to reproduce and therefore develop new seeds that can grow into new plants.
Q.4: State the main difference between asexual and sexual reproduction.
Ans : Difference between asexual and sexual reproduction.
Q.5: Explain the difference between self-pollination and cross-pollination.
Ans : Difference between self-pollination and cross-pollination.
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