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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

The major function of cellular DNA is

4 / 25

A group of grass hoppers – some green and some brown-lived in grassland having dry bushes and dry grass. Name the phenomeneon

5 / 25

Name the organ analogous to the wings of birds.

6 / 25

If the fossil of an organism is found in the deeper layers of earth, then we can predict that:

7 / 25

In human males, all the chromosomes are match up perfectly except one. These unpaired chromosomes are:

  1. Large chromosome
  2. Small chromosome
  3. Y chromosome
  4. X chromosome

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

Choose the precise statement(s) on budding in yeast from the following:

10 / 25

The characteristics transmitted from parents to ofspring are present in

11 / 25

Which one of the following permanently marks the end of menstrual cycle in females ?

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

Assertion (A): Variation is useful for the survival of species over time. Reason (R) : Populations of organisms fill well-defined places in the ecosystem, using their ability to reproduce

14 / 25

What is the mode of asexual reproduction in Spirogyra

15 / 25

Which of the following is a bacterial STD?

16 / 25

Which pollination increases genetic uniformity and decreases variations

17 / 25

In the excretory system of human beings, some substances in the beginning fitrate such as glucose, amino acids, salts and water are selectively reabsorbed in:

18 / 25

Pseudopodia are:

19 / 25

Which one of the following declaration is accurate about the human circulatory system?

20 / 25

Select the function of the pancreatic Juice from the following:

21 / 25

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

22 / 25

In which of the following vertebrate groupȰ groups, does heart not pump oxygenated blood to diferent parts of the body?

23 / 25

The organ of the circulatory system in humans.

24 / 25

Human skin is impermeable to gas because

25 / 25

Name an enzyme present in pancreatic juice

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