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CBSE Class X – Science Biology Exam ( Full Syllabus)

This test is designed based on NCERT Syllabus for Class 10 Topics of Science – Biology

  • Each time random 25 questions will be displaced from the question bank of 500 + Questions
  • So we recommend you to retake the quiz till you have mastered all the questions

1 / 25

Why did Mendel carry out an experiment to study inheritance of two traits in garden-pea

2 / 25

What is the phenotypic ratio obtained in Mendels dihybrid cross

3 / 25

Laws of inheritance were proposed by

4 / 25

Bacteria have a simpler body plan when compared with human beings. Does it mean that human beings are more evolved than bacteria?

5 / 25

The number of pair(s) of sex chromosomes in the zygote of humans is

6 / 25

Two pink coloured fowers on crossing resulted in 1 red, 2 pink and 1 white fower progeny. The nature of the cross will be:

7 / 25

Which of the subsiquent is not a direct conclusion that can be drawn from Mendels experiment?

8 / 25

In peas, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in F2  generation will be:

9 / 25

Characters that are transmitted from parents to ofspring during reproduction

10 / 25

Which among the following statements are true for sexual reproduction in fowering plants?

  1. It requires two types of gametes.
  2. Fertilisation is a compulsory event.
  3. It always results in the formation of zygote.
  4. Offsprings formed are clone

11 / 25

The number of chromosomes in parents and ofsprings of a particular species remains unchanged due to

12 / 25

Slides of binary fission in Amoeba and budding in yeast were given for observa group of students. Some of the observations reported by the group are given below:

  1. Cytokinesis was observed in the yeast cell.
  2. A chain of buds were observed in Amoeba.
  3. Single cell of Amoeba and single cell of yeast were undergoing binary fission and budding respectively
  4. Elongated nucleus was dividing to form two daughter nuclei in Amoeba

13 / 25

What is the mode of asexual reproduction in Amoeba?

14 / 25

Name the organ that produces sperms in human males.

15 / 25

Tubectomy does not prevent the spread of sexually transmitted diseases.

16 / 25

Blocking of fallopian tubes prevents ?

17 / 25

Which part of alimentary canal collects bile from the liver?

18 / 25

When air is blown from mouth into a test tube suppress lime water, the lime water turns milky due to the presence of:

19 / 25

Which of the subsequent statement(s) is/are true about heart?

20 / 25

Single circulation, i.e., blood fows through the heart only once during one cycle of passage through the body, is manifested by:

21 / 25

The xylem in plants are responsible for

22 / 25

The organ of the circulatory system in humans.

23 / 25

How many chambers are there in the heart of an amphibian?

24 / 25

The two substances which are selectively reabsorbed from Nephriitic filtrate into the blood.

25 / 25

The Fluid collected in the Bowman’s capsule as a result of ultrafiltration is called

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