Practice Questions CBSE - Science Class 10 (2023 Boards)

Question 1

Question 2

Question 3 Important

Question 4 Important

Question 5 Important

Question 6

Question 7 Important

Question 8

Question 9 Important

Question 10

Question 11

Question 12 Important

Question 13 Important

Question 14

Question 15 Important

Question 16

Question 17 [Assertion Reasoning] Important

Question 18 [Assertion Reasoning] Important

Question 19 [Assertion Reasoning] Important

Question 20 [Assertion Reasoning]

Question 21 (Choice 1) Important

Question 21 (Choice 2)

Question 22 Important

Question 23

Question 24 Important

Question 25 (Choice 1)

Question 25 (Choice 2)

Question 26 Important

Question 27

Question 28 Important

Question 29 (Choice 1)

Question 29 (Choice 2) Important

Question 30 Important

Question 31 (a)

Question 31 (b) Important

Question 32 (Choice 1)

Question 32 (Choice 2) Important

Question 33 (a)

Question 33 (b)

Question 33 (c) Important

Question 34 (a) - Choice 1

Question 34 (b) - Choice 1 Important

Question 34 (c) - Choice 1

Question 34 (a) - Choice 2 Important

Question 34 (b) - Choice 2]

Question 34 (c) - Choice 2 Important

Question 35 (a) - Choice 1 Important

Question 35 (b) - Choice 1 Important

Question 35 (c) - Choice 1

Question 35 (a) - Choice 2 You are here

Question 35 (b) - Choice 2 Important

Question 35 (c) - Choice 2

Question 36 Important

Question 37 (a) - Choice 1 [Case Based]

Question 37 (b) i - Choice 2 [Case Based] Important

Question 37 (b) ii - Choice 2 [Case Based] Important

Question 38 (a) - Choice 1 [Case Based]

Question 38 (b) - Choice 1 [Case Based] Important

Question 38 (c) - Choice 1 [Case Based]

Question 39 (a) - Choice 1 [Case Based] Important

Question 39 (b) - Choice 1 [Case Based]

Question 39 (c) - Choice 1 [Case Based]

Question 39 (d) - Choice 1 [Case Based] Important

Question 39 (d) - Choice 2 [Case Based] Important

(a) Describe the process of seed formation in a flowering plant.

 

Answer:

(a)

  • The process of seed formation in plants starts when the pollen (male gamete) from the stamen is transferred to the stigma
  • The pollen tube germinates and penetrates the style to reach the ovary (contains egg - female gamete). 
  • The male germ cell and the female germ cells combine to form the zygote
  • The zygote undergoes rapid division to form the embryo inside the ovule. 
  • The ovule develops a seed coat and turns into a seed .

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo