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Posted By: Atul Member Level: Diamond Posted Date: 04 Apr 2008
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2007 Himachal Pradesh State Science - II ( Botany and Zoology ) - Class X Question paper
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Science - II ( Botany and Zoology ) - Class X
Time Allowed : 2 ½ Hours
Maximum Marks : 100
--------------------------------------------------------------------------------
Part - I
Botany
Section - A (50 marks)
I.
A) Choose the correct answer: (5 × 1 = 5 marks)
1.
The vascular bundle of the dicot stem is said to be open because of the presence of
Phloem
Xylem
Cambium
Pith
2.
................cannot pass through the plasma membrane.
Proteins
Amino adds
Water
Oxygen.
3.
During fennentatlon yeast converts sugar into...............and carbon dioxide.
lactic add
vinegar
alcohol
water
4.
Fungi and bacteria form the...............in a food chain.
producer
consumer
decomposer
herbivore
5.
Clove oil is used to relieve
toothache
headache
malaria
indigestion
B) Match the following: (5 × 1 = 5 marks)
1. Root cap
2. Nucleus
3. Casuarina
4. OpunHa
5. Cardamom
a) Storage of Water
b) Racemose branching
c) Heredity
d) Protection
e) Cymose branching
Section - B
II. Answer any ten of the following : (10 × 2 = 20 marks)
A). Differentiate between the following pairs (any two points only):
1.
Exarch xylem and endarch xylem.
2.
Aerobic respiration and anaerobic respiration.
3.
Biodegradable wastes and non-biodegradable wastes.
B) Give reasons for the following:
4.
The epidermis of a leaf Is covered by a cuticle.
5
Very low temperatures affect the rate of respiration.
6
Frequent use of headphones or the walkman must be avoided.
C) Give any two practical applications of the following:
7
Osmosis.
8
Endoplasmlc reticulum.
9
Ocimum.
D) Answer the following briefly:
10
Define Sericulture.
11
Mention die types of transpiration.
12
What is photoperiodlsm?
Section - C
III. Answer any four of the following: (4 × 5 = 20 marks)
13.
Draw an experimental set-up to show osmosis.
14.
Draw a neat labelled diagram of the ultrastructure of a plant cell.
15.
Describe the structure and functions of mitochondria.
16.
Explain the mechanism of opening and closing of stomata.
17.
Show by an experiment that CO2 is necessary for photosynthesis.
18.
Give an account of the causes and effects of noise pollution,
19.
Write a note on prawn culture.
Part - II
Zoology
Section - A (50 marks)
I.
A) Choose the correct answers :(5 × 1 = 5 marks)
1.
The spiral value is present in the ...............of frog.
Sinus Venosus
Truncua artertoaue Left auricle.
Right auricle
Left auricle
2.
The coloured part of the eye is
Retina
Rods
Iris
Cones.
3.
Relaxin is produced by
Ovary
Adrenals
Testla
Pituitary.
4.
Keratomalada is caused due to the deficiency of
Vitamin D
vitamin C
Vitamin K
Vitamin A.
5.
What is formed only during sexual reproduction?
Bud
Gemmule
Zygote
Spore.
B) Match the following: (5 × 1 = 5 marks)
1.Blood of Cockroach
2.Malpighian capsule lie
3.Semicircular canals
4.Vitamin E
5.AIDS
a) Balance
b) Hearing
c) Haemocoel
d) Ultra filtration
e) Anti-sterillity
Section - B
II. Answer any ten of the following : (10 × 2 = 20 marks)
A) Differentiate between the following pairs (any two points only):
1.
Forewings and Hindwings of Cockroach.
2.
Inspired and Expired air,
3.
Sexual reproduction and Asexual reproduction.
B) Give reasons for the following:
4.
Respiration in cockroach is said to be more efficient than any other animal.
5.
Iodised salt must be used In cooking.
6.
Sunlight is good for health.
C) Give the importance of the following (any two points only):
7.
Vitamin K.
8.
Lymph.
9.
Vaccination
D) Answer the following briefly:
10.
What is frog spawn?
11.
Mention the role of a pacemaker.
12.
Name the diseases against which triple antigen is administered.
Section - C
III. Answer any four of the following : (4 × 5 = 20 marks)
13.
Draw a neat labelled diagram of the male reproductive system of frog
14.
Draw the longitudinal section of a human kidney and mark the parts
15.
Explain the mechanism of breathing ln man.
16.
Describe the nervous system of Cockroachi.
17.
Discuss the structure, hormones secreted, action, deficiency and hyper-aecretion of Thyroid gland.
18.
Bring out the importance of Vitamin B complex and Vitamin C.
19.
Describe the structure and functions of the cerebrum.
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