Answer the following questions related to sex determination in human beings:
i. What is sex chromosome?
ii. How many pairs of chromosomes are present in human beings?
iii. How is the sex of the human offspring determined?
iv. Draw a diagram depicting sex determination in man.
Concept: Sex Determination in Humans
Explain mechanism of sex-determination in birds.
Concept: Sex Determination in Birds
Illustrate any ‘three’ genes which can be used in gene therapy.
Concept: Biotechnological Applications in Medicine
Describe the steps of PCR technique.
Concept: Biotechnological Applications in Medicine
What is vaccine?
Concept: Biotechnological Applications in Medicine
Give economic importance of apiculture
Concept: Animal Husbandry
With the help of a labelled diagram describe the internal structure of human heart.
Concept: Circulatory Pathways > Human Circulatory System
Sketch and label ‘L.S. of human kidney’
Concept: Human Excretory System
Draw labelled diagrams of the following: Eye
Concept: Sensory Reception and Processing > Eye - Parts of an Eye
With the help of a neat and labelled diagram, describe reflex arc.
Concept: Reflex Action and Reflex Arc
Describe the T. S. of thyroid gland
Concept: Endocrine Glands and Hormones
With the help of a neat, labelled diagram describe the human male reproductive system.
Concept: The Male Reproductive System
What is spermatogenesis? Briefly describe the process of spermatogenesis.
Concept: Gametogenesis
Describe the T.S. of human testis
Concept: Microscopic Anatomy of Testis
What is Red Data Book?
Concept: Red Data Book
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
Concept: Pre-fertilisation - Structures and Events > Pollination
Define vegetative propagation.
Concept: Asexual Reproduction
Differentiate between 'stem tuber' and 'tuberous root'.
Concept: Asexual Reproduction
Vegetative propagation takes place with the help of leaves in _______ plant.
(A) Kalanchoe
(B) Oxalis
(C) Cynodon
(D) Dahlia
Concept: Asexual Reproduction
Label the parts (1) and (2) in budding of yeast cell.
Concept: Asexual Reproduction
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