Question # 1

When we work hard we suffer form muscle fatigue muscle cells.

Choose an answer

Carry out aerobic respiration and so accumulate more CO₂

Carry out anaerobic respiration and so accumulate lactic acid

Carry out aerobic respiration at faster rate and so accumulate lactic acid

Carry out aerobic respiration at faster rate and so are tired

Which of the following chambers has the thickest walls in human heart?

Choose an answer

Right atrium

Left atrium

Left ventricle

Right ventricle

Males with two Y chromosomes have more .................. tendensies.

Choose an answer

Citizenship

Criminal

Good

None

There is separation of oxygenated and deoxygenated blood in birds and mammals because:

Choose an answer

The ventricles are completely divided

The ventral aorta is divided into aortic and pulmonary trunk.

The aortic arch is divided into two systemic arches.

None of the above

Healthy skin & hairs are maintained by .............. .

Choose an answer

Fats

Protein

Carbohydrates

Vitamins

The 6-carbon compounds during the dark reactions of photosynthesis split into ____________ carbon compound.

Choose an answer

5

3

7

4

Micro filaments are made of:

Choose an answer

Tubulin protein

Lipids

Carbohydrates

Actin protein

Chromatids get separated form each other during:

Choose an answer

Prophase

Telophase

Anaphase

Metaphase

The kingdom of bacteria is:

Choose an answer

Fungi

Monera

Protista

Plantae

How many percent of the light falling on the leaf surface is absorbed:

Choose an answer

5%

6%

7%

1%

Which one of the following is correct sequence in biological method?

Choose an answer

Observations, Hypothesis , Law, Theory

Hypothesis, observations, Deductions , Experimentation

Observations, hypothesis, Deduction, Experimentation

Law, Theory , Deduction, Observations

It is a group of related phyla:

Choose an answer

Kingdom

Class

Order

Family

The thin extensions of the inner mitochondrial membrane are known as __________

Choose an answer

Cristae

Matrix

Thylakoids

Stroma

More Classes

Other Links

Biology 9th Class English Medium Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer