Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

Differentiate between carnivores and consumers.

A patient complains of suffering from constipation, stomach ache, stool with blood clots and excess mucous.
The physician diagnosed it as amoebiasis, after stool test.
a. Write the scientific name of the microbe identified in the stool sample.
b. How do you think, the patient must have contracted it?
c. Write your suggestions to the patient to avoid infection in future.

Forests provide intangible benefits to us. Explain by taking three different areas, how.

In the garden pea plant, the green color of pod is dominant over the yellow color of the pod to determine the genotype of a plant of unknown genotype, use punnett square to represent the genotype and phenotype of the test cross?

If the meiocyte of a maize plant contains 20 chromosomes, write the number of chromosomes in the endosperm and embryo of the maize grain and give reasons in support of your answer.

Give the name and character of the disease caused by Antamoeba histolytica, Trichophyton and wucheria in human.

Describe the structure of a seminiferous tubule.

Express your opinion on removal of tribal people out of forest due to developmental activities in the forest.

Branching descent and natural selection are the two key concepts of Darwinian Theory of Evolution. Explain each concept with the help of a suitable example.