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Mention any four benefits of biogas.
Concept: Microbes in Energy Generation
Describe the steps of PCR technique.
Concept: Commercial Applications of Biotechnology
Give the importance/significance of transgenic animals.
Concept: Commercial Applications of Biotechnology
Define the following term:
Commensalism
Concept: Population Interactions
Define ‘Ecological succession’.
Concept: Ecological Succession
Sketch and label the structure of Malpighian body.
Concept: Regulation of Kidney Function
What is double fertilisation? Describe the process in brief.
Concept: Fertilization Process
Define parthenocarpy.
Concept: Formation of Seed and Fruit
Sketch and label V. S. of mature anatropous ovule.
Concept: Pre-fertilization in Plant: Structure and Events
The outer layer of the pollen grain is thick and made up of a complex, non-biodegradable substance called _______.
Concept: Pre-fertilization in Plant: Microsporangium
The number of meiotic and mitotic divisions necessary for development of female gametophyte in angiosperms is ______.
Concept: Reproduction
Draw a well labelled diagram of T.S. anther.
Concept: Reproduction
Give an account of polyembryony.
Concept: Polyembryony
Explain the development of male gametophyte in angiosperms (diagram is not expected).
Concept: Asexual Reproduction in Plant
Explain any two contrivances or outbreeding devices for pollination.
Concept: Pollination > Outbreeding Devices
Describe any three adaptations in anemophilous flowers.
Concept: Pollination
What is Siphonogamy?
Concept: Fertilization Process
With the help of a neat, labelled diagram describe the human male reproductive system.
Concept: Human Reproduction > The Male Reproductive System
Briefly describe the process of spermatogenesis.
Concept: Gametogenesis
Describe the T.S. of human testis
Concept: Human Reproduction > The Male Reproductive System
