Question
What is the effects of global warming?
✓
Answer
Effects of global warming are:
- As the increase in temperature will be uniform all over the surface of the world. There will be serious climatic changes. This will bring various changes in wind and rain pattern.
- Higher temperature will cause a rise in transpiration. This, in turn, will affect the groundwater table.
- As the climatic belts shift from the equator towards the pole, the vegetation would also shift away from the equator.
- Insects and pests will increase in the warmer climatic conditions. Thus, pathogenic diseases will multiply.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Droplets of water may sometimes be seen along the margins of the leaves of a banana plant, growing in wet soil, in the mornings. Are these dew drops? Comment upon your answer.
Explain the Term: The Bowman’s capsule
Give any four differences between photosynthesis and respiration.
Match the events given in column A with the phase in mitotic cell division in column B
| Column ‘A’ | Column ‘B’ | ||
| 1 | Chromosomes get arranged in a horizontal plane at the equator. | a | Prophase |
| 2 | Daughter chromosomes move to the opposite poles of a spindle. | b | Anaphase |
| 3 | Chromosomes become visible as fine long threads. | c | Metaphase |
| 4 | Chromosomes lose their distinctiveness and gradually become transformed into a chromatin network. | d | Telophase |
What is the significance of osmosis? Explain in brief.
The apparatus shown here is Girreau’s poto-meter designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride ($CaCl_2$) contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After a few hours, $CaCl_2$ vials were taken out and weighed again.
(i) What is the purpose of keeping $CaCl_2$ vials inside the cup?
(ii) After a few hours, the $CaCl_2$ vials were taken out and weighed again. Will you expect any difference in weight? If so, give reasons.
(iii) What was the purpose of using a mano-meter?
(iv) What do you mean by transpiration?
→(i) What is the purpose of keeping $CaCl_2$ vials inside the cup?
(ii) After a few hours, the $CaCl_2$ vials were taken out and weighed again. Will you expect any difference in weight? If so, give reasons.
(iii) What was the purpose of using a mano-meter?
(iv) What do you mean by transpiration?
Given below is a schematic diagram showing Mendel’s Experiment on sweet pea plants having axial flowers with round seeds (AARR) and Terminal flowers with wrinkled seeds (aarr). Study the same and answer the questions that follow :
(i) Give the phenotype of $F_1$ progeny.
(ii) Give the phenotypes of $F_2$ progeny produced upon by the self-pollination of $F_1$ progeny.
(iii) Give the phenotypic ratio of $F_2$ progeny.
(iv) Name and explain the law induced by Mendel on the basis of the above observation.
→(i) Give the phenotype of $F_1$ progeny.
(ii) Give the phenotypes of $F_2$ progeny produced upon by the self-pollination of $F_1$ progeny.
(iii) Give the phenotypic ratio of $F_2$ progeny.
(iv) Name and explain the law induced by Mendel on the basis of the above observation.
The figure given alongside represents the vertical section of a leaf.
(i) Name the given structure.
(ii) Give an example of two plants where this structure is present.
(iii) Which physiological process takes place through this structure?
(i) Name the given structure.
(ii) Give an example of two plants where this structure is present.
(iii) Which physiological process takes place through this structure?
What is the difference between reflex action and voluntary action?
| Column I | Column II | ||
| a | Xylem | 4 | semi-permeable |
| b | Phloem | 3 | permeable |
| c | Cell membrane | 1 | downward flow of sap |
| d | Root pressure | 5 | upward flow of water |
| e | Cell wall | 2 | guttation |