TRY THESE QUESTIONS

CHAPTER 1. REPRODUCTION IN LOWER AND HIGHER PLANTS

QN. 1) ATTEMPT ANY THREE OF THE FOLLOWING :-( 2 MARKS EACH)

A) Describe the structure of embryo sac in angiosperms with the help of labelled diagram.

B) Differentiate between wind pollination and insect pollination.

C) Describe the internal structure of anther with the help of labelled diagram.

D) Give the significance of seed and fruit formation.

E) Explain any two outbreeding devices for cross pollination.

F) Draw a well labelled diagram of male gametophyte of flowering plants.

QN. 2) ATTEMPT ANY TWO OF THE FOLLOWING :-( 3 MARKS EACH)

A) Describe the development of female gametophyte in angiosperms with the help of labelled diagram.

B) Define double fertilization. Explain the process and state its importance.

C) Explain the development of dicot embryo in Angiosperms.

D) What is apomixis? Explain different types of apomixis with suitable examples.

 

 

CHAPTER 2. REPRODUCTION IN LOWER AND HIGHER ANIMALS

QN. 1) ATTEMPT ANY THREE OF THE FOLLOWING :-( 2 MARKS EACH)

A) Describe the structure of Graafian follicle with the help of diagram.

B) Write a note on uterus and also mention its functions...

C) Explain the process of spermatogenesis in humans with the help of labelled diagrams.

D) Give the significance of fertilization.

E) Explain various stages of parturition.

F) Write a note on ZIFT and GIFT.

QN. 2) ATTEMPT ANY TWO OF THE FOLLOWING :-( 3 MARKS EACH)

A) Describe internal structure of human testis with the help of diagram (T.S. is expected).

B) Write an account of blastulation and implantation. (Diagram not expected)

C) Explain the mechanical means of birth control.

D) Explain various phases of menstrual cycle.

E) Give an account of different accessary sex glands associated with human male reproductive system.

 

CHAPTER 3. INHERITANCE AND VARIATION

QN. 1) ATTEMPT ANY THREE OF THE FOLLOWING :-( 2 MARKS EACH)

A) Give different reasons for Mendel’s success.

B) Explain monohybrid cross and ratio with suitable example.

C) Define the terms: - 1) Trait    2) Genotype

D) Describe the structure of chromosome with the help of diagram.

E) Write an account of Down’s syndrome.

F) Write a note Autosomal inheritance.

QN. 2) ATTEMPT ANY TWO OF THE FOLLOWING :-( 3 MARKS EACH)

A) Write an account of various types of linkage.

B) Explain codominance with suitable example.

C) Explain inheritance of colorblindness.

D) Explain dihybrid cross and its ratio with suitable example.

E) Describe the mechanism of sex determination in bird and honey bees.

 

CHAPTER 4. MOLECULAR BASIS OF INHERITANCE

QN. 1) ATTEMPT ANY THREE OF THE FOLLOWING :-( 2 MARKS EACH)

A) Explain the packaging of DNA in eukaryotes.

B) Write a note on experiment that gave unequivocal proof that DNA is the genetic material.

C) Explain any four properties of genetic code.

D) What are the different objectives of Human Genome Project?

E) Name the three enzymes and their roles involved in digestion of lactose.

F) Explain the structure of transcription unit with the help of diagram.

QN. 2) ATTEMPT ANY TWO OF THE FOLLOWING :-( 3 MARKS EACH)

A) Write a note on structure of DNA.

B) Explain the process DNA replication.

C) Explain the process of translation in protein synthesis.

D) Explain the process of DNA fingerprinting in a stepwise manner.

E) Write a note on lac operon concept.

 

CHAPTER 5. ORIGIN AND EVOLUTION OF LIFE

QN. 1) ATTEMPT ANY THREE OF THE FOLLOWING :-( 2 MARKS EACH)

A) Give main features of mutation theory.

B) Explain various types of chromosomal aberrations.

C) Give an account of reproductive isolation.

D) What are the different types of fossils? Give their importance in evolution.

E) Write an account of skeletal features of Neanderthal man.

F) Write a note analogous and homologous organs.

QN. 2) ATTEMPT ANY TWO OF THE FOLLOWING :-( 3 MARKS EACH)

A) Write an account of Urey and Miller’s experiment.

B) Explain in brief different points of chemical evolution of life.

C) Give an account of RNA world hypothesis.

D) Explain Darwinism in detail.

E) Explain different types of Natural selection with proper diagrams.