Biology

What type of development of an embryo from an unfertilized egg is called?

Which one of the following parts is not responsible for transpiration in plants?

Which type of mutation is caused by the addition or deletion of a single nitrogenous base?

What basis would you apply to distinguish a meristematic tissue from a permanent tissue?

Some of the C₄ plants possess diagnostic features of Kranz anatomy. Select which of the following plant contains such features?

Study the given figure carefully and answer the following questions.

i) Identify the given figure.

ii) Name the parts A to D.

iii) State the function of part D

If you are assigned to make a Watson and Crick model of DNA, what essential components do you apply to make the exact structure of the DNA?

Assuming you are provided seeds for germination, which influencing parameters you need to follow for normal germination? What would happen when seeds are kept in low temperature?

Biotechnology is an emerging discipline in this era. Would you think it can be used to mitigate the problem of food scarcity in context to Nepal? Justify your opinion.

Semi-conservative mode of DNA replication is the most common mode of replication which results in two identical daughter DNA molecules. Explain various enzymes and mechanism involved during this process with necessary diagrams.

Which of the following tissue lacks blood supply?

In frog, coelom is derived from which embryonic layer?

What kind of enzyme is needed for digestion of milk protein in human beings?

Which one of the following sets contains the bacterial disease only?

If the cerebellum of a person gets injured, it will have effect on which of the following physiological function?

Vas deferens transport spermatozoa from cauda epididymis to ejaculatory duct. What happens when the vas deferens of a male is surgically disconnected?

Define blastulation. Write down the process of blastulation during the development of frog.

What is immunity? Explain its type.

Study the given figure carefully and answer the following questions.

i) Identify the gland.

ii) Where is it located?

iii) Mention any two hormones secreted by it.

Compare and contrast areolar and adipose connective tissue.

Peer pressure plays a negative role in provoking smoking habits in adolescents. As a school captain, plan any two activities you would like to organize with the help of senior students and any other two activities you would like your school authorities to organize for the students to tackle this problem.

A human being usually takes complex foods in her/his diet. However, our body needs its simpler form. Describe how the complex foods are converted into simpler forms within alimentary canal. Draw it with a well labeled diagram of alimentary canal. What would happen in digestion if the gall bladder is removed surgically?

On oxidation of glucose in the cells, CO₂ is released as a by-product. This CO₂ is carried to the lungs for elimination. Explain how the transport of CO₂ takes place in human body? What is the role of carbonic anhydrase enzyme? Mention the significance of diaphragm in breathing?