9th Class Biology First half Book Paper

Q1. Multiple choice questions (Attempt all · 60 × 0.5 = 30)

1. Hydrogen is an example of.
   1. Molecule
   2. Organelle
   3. Atom
   4. Tissue
2. Define Species.
3. Define / Describe / Explain briefly selective breeding.
4. Muscle cells are:
   1. Elongated
   2. Enucleated
   3. Shortened
   4. Round
5. Homo sapiens belongs to class:
   1. Hominidae
   2. Mammalia
   3. Chordata
   4. Magnoliopsida
6. Which is not related with cooling down the body temperature?
   1. Increasing blood flow to the skin
   2. Increase in sweating
   3. More breathing rate
   4. Vasodilation
7. Give the significance of muscles in the life of animals.
8. Define / Describe / Explain briefly vestigial organs.
9. Mitochondria acts as:
   1. Protein synthesizer
   2. Recyclers
   3. Powerhouse
   4. Control center
10. Scientific name of humans is:
    1. Homo sapiens
    2. Homo Sapiens
    3. Homo sapiens
    4. Homo sapien
11. Heat production in the body can be increased by.
    1. Intestine
    2. Muscles
    3. Skin
    4. Neurons
12. What is energy of activation? Explain with reference to enzyme.
13. Explain the procedure of plant tissue culture and illustrate your answer with suitable diagram.
14. A group of cells performing same function is called:
    1. Specialized Cell
    2. Organelle
    3. Organ
    4. Tissue
15. Discuss briefly the observations Darwin made during his voyage on HMS beagle.
16. Which is not relevant to root system?
    1. Anchorage of plant
    2. Food synthesis
    3. Food storage
    4. Mineral absorption
17. Dengue is caused by:
    1. Plasmodium
    2. Virus
    3. Mosquito
    4. E. coli
18. Interphase is divided into how many phases?
    1. Four
    2. Three
    3. Two
    4. One
19. Write the differences between self and cross pollination.
20. Describe speciation.
21. The table shows three functions of cells which row is correct?
    1. #VALUE!
    2. #VALUE!
    3. #VALUE!
    4. #VALUE!
22. The study of the functions of different parts of living organisms is called:
    1. Morphology
    2. Anatomy
    3. Histology
    4. Physiology
23. Those cells which give rise to gametes are called:
    1. Somatic cells
    2. Spindle Fibers
    3. Germ line cells
    4. Neurons
24. What are organs? How they are formed?
25. Name the products of anaerobic respiration in muscle cells.
26. Cardiovascular system is made up of heart and.
    1. Blood cells
    2. Blood vessels
    3. Water
    4. All of these
27. Both skin cells and cancerous cells divide rapidly. Why cancerous cells are harmful but skin cells are not?
28. Describe and sketch light reactions of photosynthesis.
29. The site of enzyme synthesis in cells is.
    1. lysosome
    2. smooth endoplasmic retriculum
    3. Golgi bodies
    4. ribosome
30. An order is a group of related:
    1. Families
    2. Species
    3. Kingdoms
    4. Genera
31. Which of the following statements best describes homestasis?
    1. keeping the body in a fixed and unaltered state
    2. dynamic equilibrium
    3. maintaining a near-constant internal environment
    4. altering the external environment to accommodate the body's needs
32. What is the difference between cytokinesis of a plant cell and an animal cell?
33. 90% of the total time of the cell cycle is occupied by:
    1. Mitosis
    2. Interphase
    3. Cytokinesis
    4. Karyokinesis
34. Which energy is harvested by chloroplasts?
    1. Nuclear energy
    2. Light energy
    3. Hydro-energy
    4. Chemical energy
35. The organisms that are composed of circular RNA only?
    1. Virus
    2. Viroids
    3. Protists
    4. Prions
36. Describe speciation in detail.
37. The word "bios" mean:
    1. Thought
    2. Life
    3. Knowledge
    4. Reasoning
38. Substance and energy required for the replication of DNA is accumulated in the cell during:
    1. G1
    2. G2
    3. S phase
    4. M phase
39. Enlist any two suitable conditions for germination of seed.
40. Name structural and energy producing nature of carbohydrates.
41. Human body temperature is maintained around.
    1. 370F
    2. 370C
    3. 380C
    4. 98.60C
42. The study of genes and their roles in inheritance is called:
    1. Histology
    2. Anatomy
    3. Genetics
    4. Inheritance
43. Meiosis was discovered in:
    1. 1875
    2. 1876
    3. 1877
    4. 1878
44. In eukaryotic cell, which of the following organelles are surrounded by cell membrane?
    1. Mitochondria
    2. Golgi apparatus
    3. Endoplasmic reticulum
    4. All of these
45. Write the difference between Monocot root and dicot root.
46. Which part of body detects the changes in temperature ?
    1. Hypothalamus
    2. Brain
    3. Liver
    4. Stomach
47. The microscopic study of tissues:
    1. Paleontology
    2. Pharmacology
    3. Histology
    4. Entomology
48. Genetic variations take place during:
    1. Prophase I
    2. Prophase II
    3. Anaphase I
    4. Telophase II
49. Write the differences between Grafting and stem cutting.
50. Which of the following is the character of life?
    1. Movement
    2. Respiration
    3. Reproduction
    4. All of these
51. Cells organize in a specific way and give rise to.
    1. Tissues
    2. Organism
    3. Molecules
    4. Organs
52. Profession dealing with production of useful products through micro-organisms:
    1. Microbiology
    2. Animal Husbandry
    3. Biotechnology
    4. Biochemistry
53. The cell shown in this diagram is passing through.
    1. Prophase I of meiosis
    2. Prophase of mitosis
    3. Telophase of meiosis I
    4. Anaphase of meiosis II
54. Red blood cells are:
    1. Biconcave
    2. Biconvex
    3. Oval shaped
    4. Irregular
55. Compare ratios of bio-elements.
56. This statement about Homeostasis is incorrect.
    1. because of this, the fluctuations of the internal environment are of extremely narrow range as compared to that of the external environment
    2. there is one system regulating the homeostatic activities
    3. homeostatic mechanisms keep the internal environment constant despite wide changes in the external environment
    4. homeostasis is necessary for the survival of cells
57. Select the structures which are present in all cells of all kingdoms. Write one function of each selected structure. Cell membrane; Nucleus; Chromosomes; Cytoplasm; Ribosome; RER; SER; Golgi apparatus; Lysosome; Mitochondria; Centriole; Cilia; Flagella; Cell wall; Cytoskeleton; Vacuole; Plastids
58. Describe the methods of natural vegetative propagation in plants.
59. Explain the concept of stem cells in detail.
60. Who introduced the scientific naming system?
    1. Isaac Newton
    2. Albert Einstein
    3. Carolus Linnaeus
    4. Robert Brown