CBSE - X
CBSEX-2006
Time allowed: 3 hours; Maximum Marks: 75
| General Instructions: | |
| 1) | The question paper comprises two Sections, A and B. You are to attempt both the Sections. |
| 2) | The candidates are advised to attempt all the questions of Section A separately and Section B separately. |
| 3) | All questions are compulsory. |
| 4) | There is no overall choice. However, internal choice has been provided in some questions. You are to attempt only one option in such questions. |
| 5) | Marks allocated to every question are indicated against it. |
| 6) | Question numbers 1—4 in Section A and 17— 18 in Section B are very short answer questions and are of 1 mark each. These are to be answered in one word or one sentence each. |
| 7) | Question numbers 5—8 in Section A and 19— 20 in Section B are short answer questions and are of 2 marks each. These are to be answered in 30—40 words each. |
| 8) | Question numbers 9—14 in Section A and 21—23 in Section B are also short answer questions and are of 3 marks each. These are to be answered in 40—50 words each. |
| 9) | Question numbers 15—16 in Section A and 24 in Section B are long answer questions and are of 5 marks each. These are to be answered in 70 words each. |
Question 17
17. Name the type of fission carried out by Amoeba.
Question 18
18. Write the expanded form of AIDS.Question 19
19. Differentiate between tropic and nastic movements in plants. Give one example of each.Question 20
20. “Rapid increase of population disturbs the biotic environment” Justify this statement taking any two aspects.
Question 21
21. Write the functions of the following in the digestive process:1.Bile
2.Bicarbonate secreted by the duodenal
3.Pancreatic amylase.
Question 22
22.
Give reasons for the following:
1. The glottis is guarded by epiglottis.
2. The lung alveoli are covered with blood capillaries.
3. The wall of trachea is supported by cartilage rings.
Question23
23.
Who proposed the “Theory of Natural Selection”? Explain this theory
briefly.
A. Darwin proposed the “Theory of Natural Selection”.
Question 24
24.
1. Draw a diagram of the human urinary system and label in it:
1. Kidney
2. Ureter
3. Urinary bladder
4. Urethra
2. Name the two major components of normal human urine.
| Section A | Section B |