Give the applications of DNA fingerprinting technique.
Concept: DNA Fingerprinting Technique
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions
(a) Acrosome
(b) Nucleus
(c) Middle piece
Concept: Gametogenesis
Describe the structure of a nucleosome.
Concept: Packaging of DNA Helix
Explain the carbon cycle with the help of a simplified model.
Concept: Nutrient Cycling
Explain sex determination in human beings.
Concept: Sex Determination
Construct an age pyramid which reflects an expanding growth status of human population.
Concept: Population
What is ecological succession?
Concept: Ecological Succession
Define organic evolution.
Concept: Theories of Origin of Life
Distinguish between ape and man.
Concept: Origin and Evolution of Man
Match the column A with B
| A | B | |
| i. | Epinasty of flower | GA3 |
| ii. | Natural auxin | NAA |
| iii. | Flowering in Litchi | IAA |
| iv. | Bolting of Beet | Ethylene |
Concept: Plant Hormones
Name the causative organism and preventive measures for Typhoid
Concept: Disease
Give the importance/significance of transgenic animals.
Concept: Commercial Applications of Biotechnology
Define the following term and give one example for each:
Commensalism
Concept: Population Interactions
Sketch and label the structure of Malpighian body.
Concept: Regulation of Kidney Function
What is double fertilisation? Describe the process in brief.
Concept: Double Fertilization and Triple Fusion in Plant
The outer layer of pollen grain is thick and made up of complex, non - biodegradable substance called as _______.
Concept: Reproduction in Plant
The number of meiotic and mitotic divisions necessary for development of female gametophyte in angiosperms is ______.
Concept: Reproduction in Plant
Draw a well labelled diagram of T.S. anther.
Concept: Reproduction in Plant
Give an account of polyembryony.
Concept: Polyembryony
With the help of a neat, labelled diagram describe the human male reproductive system.
Concept: Human Reproductive System > The Male Reproductive System
