Plant Water Relation — BIOLOGY STD 12 Science — Question

What is apiculture? What is its importance?

More than 25% of human population is suffering from hunger and malnutrition. Scientists have developed techniques where microbes are grown on industrial scale as a source of good protein which can be grown from waste water, animal manure and even sewage.
Based on the above information answer the following questions.

1. In what ways would it be helpful to humans?
2. What can be the response to such new ventures?
3. What values have been manifested in the above case?

What precautions will you take if you are travelling in an area which has lot of mosquitoes?

Describe the T. S. of human testis and explain the process of spermatogenesis.

What is biodiversity? Explain genetic diversity with suitable example.

Extero and entero receptors.

The following table shows certain diseases, their causative organisms and symptoms. Fill the gaps.

	Name of the Disease	Causative organism	Symptoms
i.	Ascariasis	Ascaris	________
ii.	________	Trichophyton	Appearance of dry, scaly lesions on various parts of the body.
iii.	Typhoid	________	High fever, weakness, headache, stomach pain, constipation.
iv.	Pneumonia	Streptococcus pneumoniae	________
v.	________	Rhino viruses	Nasal congestion and discharge, sorethroat, cough, headache.
vi.	Filariasis	________	Inflammation in lower limbs.

We are advised to use iodized salt.
OR
Why do we use iodized salt?

A child suffering from thalassemia is born to a normal couple. But the mother is being blamed by the family for delivering a sick baby.

1. What is Thalassemia?
2. How would you counsel the family not to blame the mother for delivering a child suffering from this disease? Explain.
3. List the values your counselling can propagate in the families.