Class - IX
Subject: Biology ( Theoretical)
Time : 2 hrs. Marks. 40
(N.B. The figures in the right margin indecate full marks. Draw labeled diagram if necessary. Answer the different parts of the same question chronologycally.)
Division A : ( Botany)
(Answer any two of the following questions.)
1. A lot of different virus and Bacteria around of us and these are responsible for creating disease in both plant and animal. Some of them are also useful. So, we should know about these organism.
a) What is Virus? 1
b) Why bacteria considered is also useful for us, Mention. 2
c) Draw a labeled diagram of a virus. 3
d) How you can differentiate a virus from bacteria. 4
2. The Creator created the world with various types of diversified plnts. Among the plants a lot of variation are present. Observing this variation Botanist are divided the plant world into some groups, like algae, fungus, Bryophytes, Gymnosperm etc. These group of plants are different from each other.
a) Define pteridophytes. 1
b) Why pteridophytes are considered is the first vascular plant in the world. 2
c) How you can differentiate Bryophytes from pteridophytes. 3
d) Mention the characteristics of Bryum. 4
a) What plant group are shown in the fig A and Fig B . 1
b) Why they are called so? 2
c) How fig A is different from fig. B. 3
d) Mention the Characteristics of fig. A. 4
Division B: ( Zoology)
( Answer any two of the following questions)
Roundworm is wide spread throughout the world. It's included in the second largest phyhum of animal kingdom. Man is the only host of the round worms. It can enter inside the human body with air, water, green fruits and vegetables. Round worm is unisexual. It's out break is seen is Bangladesh, India, China, Korea and Philippine etc.
4. a) What is the scientific name of round worm? 1
b) How you can differentiate male worm from female worm? 3
c) Discuss the digestive system of round worm. 6
5. a) What is parasite ? 1
b) Why round worm is called endoparasite? 2
c) Draw a labeled diagram of a male and female reproductive system of round worm. 7
6. a) Mention the symptoms of a patient infect with round worm. 2
b) Discuss how you should prevent the infection of round worm. 3
c) Describe the external morphology of round worm. 5
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