(a) Differentiate between benign and malignant tumours.
(b) Why is colostrum a boon to the newborn baby ?

Differentiate between bening tumour and malignant tumour.

Write two differences between benign tumour and malignant tumour.

(a) Differentiate between exons and introns. (b) What is a plasmid? Why is it selected as vector?

(a) Where do the signals for parturition originate from in humans? (b) Why is it important to feed the newborn babies on colostrum?

(a) Why are herbivores considered similar to predators in the ecological context ? Explain. (b) Differentiate between the following interspecific interactions in a population : (i) Mutualism and Competition. (ii) Commensalism and Amensalism.

(a) Why water soluble vitamins must be supplied regularly in the dite ? Give one example of it. (b) Differentiate between the following : (i) Essential and non-essential amino acids. (ii) Fibrous and globular proteins.

Give one significant difference between the following pair: Benign tumour and malignant tumour

Which one of the following statements is correct ? (a) Benign tumours spread to distant sites. (b) Heroin accelerates body functions. (c) Malignant tumours exhibit metastasis. (d) Patients who have undergone surgery are given cannabinoids to relieve pain.

How are malignant tumours different from benign tumours ? Why are some patients treated with alpha -interferons?

Assertion : Benign tumours are called neoplastic cells. Reason : Malignant tumour remain in place to form a compact mass by a process known as metastasis.