CLASS IX BIOLOGY
CHAPTER 5- THE FUNDANENTAL UNIT OF LIFE
1. Cell organelle that contain its own genetic material is:
a) Ribosome c) mitochondria
b) Lysosome d) Golgi bodies
2. Assertion: The inner mitochondrial membrane is highly folded. Reason: Cristae increase the surface area for respiration. The above question consists of an assertion A and a reason R for the same. Identify the correct option
a) A and R are true and R is correct explanation of A.
b) A and R are true but R is not the correct explanation of A
c) A is true but R is False.
d) A is False but R is true.
3. Division of labour exists even at intracellular level, justify the statement by giving two examples.
4. Draw a diagram of plant cell and label its any two parts.
5. List two types of plastids and state one function of each
6. a) Give two points of difference between nuclear region of bacterial cell and animal cell.
b) Which structure present in the nuclear region of living cell bears genes?
7. Write two similarities and one dissimilarity between mitochondria and plastid
8. a) Which organelle is responsible for the formation of lysosomes? Mention its other two functions.
b) Why lysosomes are called as waste disposal system of the cell?
9. When a living plant cell loses water through osmosis, there is contraction of the contents of the cell away from the cell wall. What is this phenomenon called? Show it with the help of a diagram. What happens if such a cell is then kept in dilute water?
CHAPTER 6- TISSUES
1. A student observed a slide of animal tissue in which long spindle shaped cells were visible. Which tissue did he observe?
a) skeletal muscles b) smooth muscles
c) nervous tissue d) cardiac muscles
2. List any two features of meristematic tissue.
3. Name the contractile proteins present in muscles.
4. Question numbers 4(a) - 4(d) are based on the paragraph given below and the related studied concept. Epidermis is the outermost protective layer of plant organs. The epidermis is usually made of a single layer of cells. Cells of epidermis are elongated and flattened, without intercellular space. They are living cells but their inner contents are similar to parenchyma cells. In leaves, epidermis bears small pores called stomata. In some plants living in very dry habitats, the epidermis may be thicker since protection against water loss is critical.
a) Epidermal cells have no intercellular space. Why?
b) Mention two functions of stomata.
c) Name the water proof layer present on outside of epidermis?
d) Write two features of parenchymatous cells.
5. Write one term for the following tissues:
a. joins muscle to bone
b. fat reservoir of our body
c. supporting, fills the space inside the organs and help in repair of tissues
6. a) Uma started walking fast when she noticed some unknown faces are following her. Name the two types of tissues which facilitated the movement of her leg bones in response to stimulus.
b) Draw a diagram of any both of the above mentioned two tissues and label any two parts in each
7. a) Identify the simple permanent plant tissue with the following description and also mention their location in plant body:
i). Cells have irregular wall thickenings
ii). Tissues with large intercellular spaces and cells having large air cavity
iii). Cells are long narrow and dead
8. “The growth of a plant occurs in specific regions only whereas it is not the case with animals. Why? Explain
CHAPTER 15- IMPROVEMENT IN FOOD RESOURCES
1. A farmer irrigated his field excessively after adding fertilizers. Why this is not a correct practice?
2. Which of the following is not a weed?
a) Xanthium c) Parthenium
b) Chenopodium d) Wheat
3. Fish production includes:
a) Only finned fish c) oysters
b) Prawns d) all the above
4. Define crop rotation. While choosing plants for crop rotation, what factors should be kept in mind?
5. In a cattle farm there are fifteen cattle. How can differentiate between diseased and healthy cattle without conducting diagnostic tests?
6. List the different ways in which biotic & abiotic factors affect stored food grains?
7. What preventive & control measures need to be taken before & after storing the grains?
8. a) Cattle are mainly reared for milk or performing agricultural tasks. What are these two categories of cattle’s known as?
b) Name two indigenous breeds of cattle
9. a) State two differences between egg layers and broilers.
b) How can poultry fowl be prevented from various diseases? State any three methods
10. Unpredictable monsoons/droughts/low rainfall is adversely affecting the Indian agriculture.
a) Mention any two initiatives that have been adopted to increase the availability of water for agricultural purposes.
b) State two advantages of making check dams.
c) Briefly describe canal and river lift systems of irrigation
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