CBSE CLASS 7 REPRODUCTION IN PLANT-Q/A

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Q1:What are two different types of reproduction in plant?

 

   

Answer: 1. Asexual and 2. Sexual reproduction

 

 

Q2:  What is reproduction?

 

   

Answer:   The production of new individuals from their parents is known as reproduction.

 

 

Q3:  What is  asexual reproduction   ?

 

   

Answer: In asexual reproduction plants can give rise to new plants without seeds.

 

 

Q4:  What is  sexual reproduction ?

 

   

Answer: In sexual  reproduction, new plants are obtained from seeds.  In sexual reproduction, the male and the female gametes fuse to form seeds that eventually develop into new plants.

 

 

Q5: What is  vegetative propagation.

 

   

Answer:    It is a kind of asexual reproduction in which new plants are produced from roots, stems, leaves and buds. Since reproduction is through the vegetative parts of the plant,  so it is known as vegetative propagation.  

 

 

Q6:  Plants produced by vegetative propagation take less time to grow and bear flowers and fruits earlier than those produced from seeds. Is it true or false   .

 

   

Answer:  True

 

 

Q7:  Give three examples of vegetative propagation ?

 

   

Answer:   Budding,fragmentation and spore formation. 

 

 

Q8:What is Pollination? 

 

 

Answer:  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.    

 

 

Q9:   What is the function of flowers in plants? ?

 

   

Answer:  Flowers perform the function of reproduction in plants.   

 

 

Q10:   What are vegetative parts of plant. ?

 

   

Answer:     Roots, stems and leaves are vegetative  parts in plant 

 

 

Q11: Seed dispersal takes place by means of ……………. , ………………….. and …………………. .

 

   

Answer: Wind ,Water and Animals

 

 

Q12:   The fusion of male and female gametes is termed as ……………….. .

 

   

Answer: fertilisation 

 

 

Q13:The transfer of pollen grains from the anther is known as …………………. .    ?

 

   

Answer: Pollination

 

 

Q14:   A flower may have either male or female reproductive parts. Such a flower is called ……………… .

 

   

Answer: unisexual flower

 

 

Q15:   Production of new individuals from the vegetative part of parent is called …………………    ?

 

   

Answer: vegetative reproduction.

 

 

Q16:   The seeds are formed inside the………………    ?

 

   

Answer: Fruit.

 

 

Q17:   In asexual reproduction, a new plant is grown from any part of a plant involving the seeds. Is it True/ False    ?

 

   

Answer: False

 

 

Q18:  What is a node?

 

   

Answer:    A node is a part of the stem from where a leaf grows.    

 

 

Q19:  What kind of roots is called tubers?  ?

 

   

Answer:    Roots that store food are known as tubers .

 

 

Q20:  Yeast reproduces by a process called..................    ?

 

   

Answer: Budding

 

 

Q20:  Yeast reproduces by a process called..................    ?

 

   

Answer: Budding

 

 

Q21:  How does a mould reproduce? 

 

   

Answer: by the formation of spores

 

 

Q22:  What is a mould?

 

   

Answer:    Mould is a type of fungus that grows on moist organic surfaces like leather shoes and moist walls.  

 

 

Q23:  The anther of flower contains pollen sacs that produce ..........................   

 

   

Answer: Pollen grain

 

 

Q24: Name the male reproductive unit of the flower .

 

   

Answer: Pollen

 

 

Q25: Algae, the simplest green plants, reproduce by an asexual method known as  .................

 

   

Answer: Fragmentation

 

 

Q26:   Give examples of bisexual flower. .

 

   

Answer:    Mustard and rose.

 

 

Q27:   Give some examples of unisexual flower. 

 

   

Answer:  Cucumber, maize and watermelon.    

 

 

Q28:    How Pollen grains transfer from one flower to another?

 

   

Answer:  By pollinating agents like wind, water and animals.

 

 

Q29: What is self Pollination 

 

   

Answer:      Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.  

 

 

Q30: What is cross Pollination

 

   

Answer:    Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.