CBSE Class 7 Science Reproduction in Plants Worksheet with Solution by Expert Science Mam. Students of 7th Grade can solve this worksheet for extra preparation before exam. Private Teacher or Guardians of the Students can copy all the questions of this chapter and will match after solve their students.
Reproduction in Plants Class 7 Worksheet
Worksheet for Chapter No.12): – Reproduction In Plants
The following questions are important for your exams for 1 mark 2 mark or 5 marks. First solve the questions on your own and then saw the solution for understanding it better.
Practice worksheet for class 7
Section A
Q.1.) Define reproduction and state two main types of reproduction ?
→ The production of new individuals from their parents is known as reproduction.
Two main types of reproduction are:-
1.) Asexual reproduction
2.) Sexual reproduction
Q.2.) What do you mean by sexual reproduction and asexual reproduction in plants?
→ 1.) Sexual reproduction- It is a type of reproduction that involves the production of an offspring by the fusion of male and female gametes.
2.) Asexual reproduction- it is a type of reaction in which only a single organism gives rise to a new individual.
Q.3.) What are the types of a sexual reproduction?
→ 1.) Binary fission
2.) Budding
3.) Fragmentation
4.) Spore formation
Q.4.) State the difference between sexual reproduction and asexual reproduction?
SEXUAL |
ASEXUAL |
Two parents take part |
Single Parent |
Variation occurs in offspring |
Offspring are genetically to each other and to their parent |
Fertilization takes place |
No internal fertilization or External fertilization |
Gametes are involved |
No gametes |
Mixing of hereditary material |
No mixing of hereditary material |
Q.5.) State the advantages of sexual reproduction?
→ Due to recombination and crossing over the sexual reproduction brings out variation in species. Variations are essential for individuality and evolution.
Q.6.) Which part of a plant is used for sexual reproduction and write the name of male and female reproductive parts?
→ Flowers are reproductive parts of a plant. Stamens are male reproductive part and pistil is female reproductive part of a plant.
Q.7.) What are the unisexual and bisexual flowers. Give example of each?
→ 1.) Unisexual flowers- Flowers which contain either only pistil or only stamens are called as unisexual flowers.
Example – corn , papaya
2.) Bisexual flowers – Flowers which contain both stamens and pistil are called as bisexual flowers.
Example – Mustard , Rose
Q.8.) What is fertilization?
→ The cell which results after fusion of the gametes is called a zygote. The process of fusion of male and female gametes to form a zygote is called as fertilization. The zygote develops into an embryo.
Q.9.) Define pollination and write the types of it?
→ Transfer of Pollen grains from anther to the stigma that is from the male part of a flower to the female part of the flower is called as pollination.
There are two main types of pollination :-
1.) Self-pollination
2.) Cross pollination
Q.10.) What are the three main types of meristematic tissue?
→ 1.) Apical meristem
2.) Lateral meristem
3.) Intercalary meristem.
Q.11.) What are the functions of permanent tissue ?
→ 1.) It provide support to a plant
2.) It conducts the water, mineral, and nutrients to the various parts of the plant.
3.) It protects and perform the function of photosynthesis.
Q.12.) Describe the various ways by which seeds are dispersed?
→ 1.) Seeds and fruits are carried away by wind water and animals.
2.) Winged seeds such as light seeds of grasses and hairy fruit of sunflower get blown off with the wind too far away.
3.) This fruits usually developed floating ability in the form of a spongy or fibrous outer coat as in coconut.
4.) Some seeds are disposed by animals with hooks which get attached to the bodies of animals and our carried to distant places.
5.) Some seeds are dispersed when the fruits burst, they the seeds are started far from the parent plant.
Q.13.) Sketch the reproductive parts of a flower?
Q.14.) State the difference between self-pollination and cross pollination?
Self-pollination | Cross -pollination |
In self-pollination, pollen grains are transferred from the another to the stigma of the same flower. | In cross – pollination, pollen grains are transferred from the anther of one flower to the stigma of another flower of the same kind. |
Self – pollination occurs only bisexual flowers. | It occurs in both unisexual and bisexual flowers. |
Q.15.) Describe the method of vegetative propagation with example?
→ Vegetative propagation is the type of asexual reproduction in which new plants are produced from roots, stems , leaves and buds. Shri production is through the vegetative parts of the plant is called as vegetative propagation.
Examples Tuber of potato and the rhizome of Ginger.
Q.16) Give the description of following methods?
→ 1.) Budding – The small bulb like projection coming out from the yeast cell please called as a bud. The bud gradually grows and gets detached from the parent cell and forms a new yeast cell the new yeast cell grows matures and produces more yeast cells. Sometimes another bud arises from the bud coming a chain of buds.
2) Fragmentation- In ponds and in other stagnant water bodies some slimy green patches developed all as algae. When water and nutrients are available algae grows and multiply rapidly by fragmentation and alga breaks up into two or more fragments these the fragments or pieces grow into new individuals and this process continues and the cover a large area in a short period of time.
Q.17.) Describe the method of spore Formation
→ 1.) Sports are asexual reproductive bodies .
2.) Each spore is covered by hard protective covering to withstand unfavorable conditions such as high temperature and low humidity so they can survive for a long period of time.
3.) Under favorable conditions , a spore germinates and develops into a new individual .
4.) plants such as moss and ferns also reproduce by means of spores.
Q.18.) How fruits and seeds formation take place?
→ After fertilization the ovary grows into a fruit and other parts of the flower fall off. The fruit is the ripened ovary. The seats develop from the ovules and the Sid contains and embryo enclosed in a protective seed coat. Some fruits are fleshy and juicy such as mango and orange some fruits are hard like almonds and walnuts.