Please select a subject first
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Match the columns:
| Column A (Scientist) | Column B (Theory) | ||
| (1) | Dixon and Joylly | (a) | Starch-sugar inter-conversion theory |
| (2) | Steward | (b) | Osmotic absorption theory |
| (3) | Atkins and Pristley | (c) | Non-osmotic absorption theory |
| (4) | Kramer and Thimann | (d) | Cohesion tension theory |
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Rakesh is colour blind, married to Sangeeta who is having normal v1s10n (Homozygous). They have a son and a daughter. Determine the type of vision in their children with the help of a suitable chart.
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Write a short note on Structure of stomatal apparatus.
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Types of sex- linked genes:
(Haemophilia, Ichthyosis, nephritis, Myopia, Hypertrichosis, Retinitis pigmentosa)
| Column 'A' | Column 'B' | |
| (1) | Completely X- linked genes | ______ |
| (2) | Completely Y- linked | ______ |
| (3) | Incompletely sex-linked genes | ______ |
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What are the limitations of root pressure theory?
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Give the name and function for ‘A’ and ‘B’ from the diagram given below
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With the help of diagrammatic representation, explain the process of gametogenesis
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In which of the following haploid cells a whole genome in human being is present?
- sperm
- somatic cell
- mature RBC
- primary spermatocyte
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What does abbreviation HGP stand for?
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How depletion of the ozone layer affect living organisms?
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Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions:
- Acrosome
- Nucleus
- Middle piece
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Briefly describe the process of spermatogenesis.
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Name the functions - Acrosome of sperm.
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Ozone depletion is occurring widely in the stratosphere; it leads to an ozone hole caused mainly due to ______.
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Describe the process of budding in hydra.
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The harmful radiations absorbed by the ozone layer are ______.
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The pairing of homologous chromosomes is call______
(a) crossing over
(b) terminalization
(c) synapsis
(d) bivalent
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Define ‘genomics’. Give any ‘two’ applications of it.
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Give scientific reasons:
Ozone present in the stratosphere is called as “good ozone”.
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Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
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