(English Medium)
Academic Year: 2022-2023
Date & Time: 29th March 2023, 11:00 am
Duration: 2h
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- Answers to this Paper must be written on the paper provided separately.
- You will not be allowed to write during the first 15 minutes.
- This time is to be spent reading the question paper.
- The time given at the head of this Paper is the time allowed for writing the answers.
- Attempt all questions from Section A and any four questions from Section B.
- The intended marks for questions or parts of questions are given in brackets [ ].
The sex chromosome in a human ovum is ______.
X chromosome
Y chromosome
Both X and Y chromosomes
Either X or Y chromosome
Chapter: [0.013000000000000001] Genetics – Some Basic Fundamentals
Which one of the following is a biodegradable waste?
Metal cans
E-waste
Plastic
Flowers
Chapter: [0.06] Pollution
The heart sound 'Dub' is produced when ______.
Semilunar valves open
Atria ventricular valves close
Semilunar valves close
Atria ventricular valves open
Chapter: [0.031] The Circulatory System
Deplasmolysis occurs when a plasmolysed cell is placed in ______.
Concentrated salt solution
Tap water
Concentrated sugar solution
Hypertonic salt solution
Chapter: [0.021] Absorption by Roots: The Processes Involved
Alpha cells of the Pancreas secrete ______.
Glycogen
Glucose
Glucagon
Insulin
Chapter: [0.034] The Endocrine System
Haploid number of chromosomes are found in ______.
Nephrons
Neurons
Skin cells
Sperms
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
The life span of an RBC is ______.
120 days
220 days
20 days
2 weeks
Chapter: [0.031] The Circulatory System
The statistical study of human population is ___________.
Demography
Morphology
Etymology
Seismography
Mortality
Natality
Equality
Population density
Population growth
Population explosion
Chapter: [0.04] Population
The pale yellow colour of normal human urine is due to the pigment ______.
Melanin
Anthocyanin
Urochrome
Haemoglobin
Chapter: [0.032] The Excretory System (Elimination of Body Wastes)
Stimulation of nerves of the sympathetic nervous system ______.
Accelerates heartbeat
Constricts pupil of eyes
Increases peristalsis
Retards heartbeat
Chapter: [0.033] Nervous System and Sense Organs
The site of light reaction in the cells of a green leaf is ______.
Nucleus
Grana of chloroplast
Cytoplasm
Strama of chloroplast
Chapter: [0.023] Photosynthesis: Provider of Food for All
The paper used to demonstrate unequal transpiration in a dicot leaf is ______.
Filterpaper
Litmus paper
Starch paper
Cobalt chloride paper
Chapter: [0.022000000000000002] Transpiration
Vitreous humour is present between ______.
Cornea and Iris
Lens and Retina
Iris and Lens
Cornea and Lens
Chapter: [0.033] Nervous System and Sense Organs [0.034] Sense Organs
Oxygenated blood to the liver is supplied by ______.
Hepatic artery
Hepatic vein
Inferior vena cava
Hepatic portal vein
Chapter: [0.031] The Circulatory System
Synthesis phase in the cell cycle is called so for the synthesis of more of ______.
RNA
RNA and proteins
DNA
Glucose
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
Name the following:
The organelle that forms the aster during cell division.
Chapter: [0.011000000000000001] Cell - the Structure and Fundamental Unit of Life [For Revision Only]
Name the following:
A genetic disorder in which the blood does not clot.
Chapter: [0.031] The Circulatory System
Name the following:
The permanent stoppage of menstruation in human females around the age of 45 years.
Chapter: [0.035] The Reproductive System
Name the following:
The openings on the barks of trees through which transpiration occurs.
Chapter: [0.022000000000000002] Transpiration
Name the following:
A gaseous plant hormone which promotes the ripening of fruits.
Chapter: [0.024] Chemical Coordination in Plants
Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Snake, Rabbit, Cabbage, Hawk.
Chapter: [0.023] Photosynthesis: Provider of Food for All [0.023] Photosynthesis: Provider of Food for All
Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Xylem, Soil water, Cortical cells, Root hair.
Chapter: [0.021] Absorption by Roots: The Processes Involved
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Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Receptor, Response, Effector, Spinal Cord.
Chapter: [0.033] Nervous System and Sense Organs
Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Fovea, Lens, Cornea, Coniunctiva.
Chapter: [0.033] Nervous System and Sense Organs [0.034] Sense Organs
Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Testis, Urethra, Sperm duct, epididymis.
Chapter: [0.035] The Reproductive System
Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct Matching pairs:
| Column I | Column II | ||
| (a) | Hyposecretion of Thyroxine in adults | 1. | Diabetes insipidus |
| (b) | Hyposecretion of Insulin | 2. | Myxedema |
| (c) | Hypersecretion of Growth Hormone in Childhood | 3. | Dwarfism |
| (d) | Hyposecretion of ADH | 4. | Gigantism |
| (e) | Hypersecretion of Thyroxine | 5. | Diabetes mellitus |
| 6. | Exophthalmic goitre | ||
| 7. | Cretinism | ||
Chapter: [0.034] The Endocrine System
Choose the odd one out from the following terms and name the category to which the others belong:
Used bandages
Pesticides
Face masks
Syringes
Chapter: [0.06] Pollution
Choose the odd one out from the following terms and name the category to which the others belong:
Dust
Smoke
Carbon monoxide
Effluents
Chapter: [0.06] Pollution
Identify the odd one.
Urethra
Uterus
Urinary bladder
Ureter
Chapter: [0.032] The Excretory System (Elimination of Body Wastes)
Choose the odd one out from the following terms and name the category to which the others belong:
Menstrual phase
Telophase
Follicular phase
Luteal phase
Chapter: [0.035] The Reproductive System
Choose the odd one out from the following terms and name the category to which the others belong:
Malleus
Incus
Cochlea
Stapes
Chapter: [0.033] Nervous System and Sense Organs [0.034] Sense Organs
State the exact location of the Thyroid gland.
Chapter: [0.034] The Endocrine System
State the exact location of the following structure.
Dura mater
Chapter: [0.033] Nervous System and Sense Organs
State the exact location of the following structure.
Amniotic fluid
Chapter: [0.035] The Reproductive System
State the exact location of the following structure.
Papillary muscles
Chapter: [0.031] The Circulatory System
State the exact location of the following structure.
Islets of Langerhans
Chapter: [0.034] The Endocrine System
Write the overall chemical equation for photosynthesis.
Chapter: [0.023] Photosynthesis: Provider of Food for All
What are the functions of blood?
Chapter: [0.031] The Circulatory System
Differentiate between Cytokinesis and Karyokinesis.
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
Excessive use of fertilisers in agricultural fields reduces the yield of crops. Justify the statement.
Chapter: [0.021] Absorption by Roots: The Processes Involved
Study the diagram given below and answer the questions that follow:
- Name the phenomenon depicted by the shoot in the above diagram.
- Which plant hormone plays an important role in the above movement?
- Complete and rewrite the given statement by filling in the correct terms:
Shoots show positive ______ whereas, roots show positive ______.
Chapter: [0.024] Chemical Coordination in Plants
Expand the abbreviation - DNA.
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
What is Active transport?
Chapter: [0.021] Absorption by Roots: The Processes Involved
Mention the two rafts of nitrogenous bases which pair with each other with hydrogen bonds.
Chapter: [0.012] Cell Cycle, Cell Division and Structure of Chromosomes
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Define Mendel’s law of segregation.
Chapter: [0.013000000000000001] Genetics – Some Basic Fundamentals
Draw a labeled diagram of sperm.
Chapter: [0.035] The Reproductive System
Explain the Term: Population density
Chapter: [0.04] Population
Name the two surgical methods of population control.
Chapter: [0.04] Population
Write any two major reasons for the population explosion in India.
Chapter: [0.04] Population
Name any two resources which come under pressure due to the rising population.
Chapter: [0.04] Population
The diagram' given below depicts climate change on planet Earth. Answer the following questions:
- Name the climatic phenomenon for the increase in Earth's temperature.
- Mention one reason for this warming.
- What measures can be taken to prevent this climate change?
Chapter: [0.06] Pollution
Define the following Term:
Transpiration
Chapter: [0.022000000000000002] Transpiration
Chapter: [0.022000000000000002] Transpiration
Mention any two functions of the human foetal placenta.
Chapter: [0.035] The Reproductive System
What is the significance of the testes being located in scrotal sacs outside the abdomen?
Chapter: [0.035] The Reproductive System
Draw neat and labelled diagrams of Malpighian capsule
Chapter: [0.032] The Excretory System (Elimination of Body Wastes)
What is a reflex action?
Chapter: [0.033] Nervous System and Sense Organs
The renal cortex has a dotted appearance, and the Renal medulla has a striped appearance. Explain.
Chapter: [0.032] The Excretory System (Elimination of Body Wastes)
Give any two functions of cerebellum.
Chapter: [0.033] Nervous System and Sense Organs
Distinguish between Semicircular canals and Utriculus based on their function.
Chapter: [0.033] Nervous System and Sense Organs [0.034] Sense Organs
A potted plant with variegated leafes was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions.
- Which aspect of photosynthesis is being tested in the above diagram?
- Why was the plant kept in the dark for 24 hours?
- After the starch test, what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.
Chapter: [0.023] Photosynthesis: Provider of Food for All [0.023] Photosynthesis: Provider of Food for All
Define the term Mutation.
Chapter: [0.013000000000000001] Genetics – Some Basic Fundamentals
A pure breeding red flower variety of pea plant (RR) is crossed with a pure breeding white flower variety of pea plant (rr). Draw a Punnett square to find out the Phenotypic and Genotypic ratios of the progeny belonging to the F2 generation.
Chapter: [0.013000000000000001] Genetics – Some Basic Fundamentals
Give suitable explanation for the following:
On a bright sunny day, the leaves of certain plants roll up.
Chapter: [0.022000000000000002] Transpiration
What is a semi permeable membrane?
Chapter: [0.011000000000000001] Cell - the Structure and Fundamental Unit of Life [For Revision Only] [0.021] Absorption by Roots: The Processes Involved
Name the semi permeable membrane present in a plant cell.
Chapter: [0.011000000000000001] Cell - the Structure and Fundamental Unit of Life [For Revision Only] [0.021] Absorption by Roots: The Processes Involved
The diagram below depicts the human heart in one of its phases. Answer the questions that follow:
- Which part of the heart is in the contraction phase?
- Give a suitable reason to justify your answer in (a).
- Distinguish between Systole and Diastole.
Chapter: [0.031] The Circulatory System
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