Practice Test

Q1) The organelles that contain their own genetic material are
Show Answer

Q2) The organelles that contain own genetic material are Show Answer

Q3) The site of protein synthesis in plants is the Show Answer

Q4) The diffusion of water from external solution into dry raisins is called Show Answer

Q5) Chromosomes contain hereditary units called Show Answer

Q6) Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell? Show Answer

Q7) Average life span of human R.B.C. is Show Answer

Q8) Cells which takes part in secondary growth are named as Show Answer

Q9) Contractile proteins are found in Show Answer

Q10) Which one of following is modification of parenchyma ? Show Answer

Q11) Bone matrix is rich in Show Answer

Q12) Blood and lymph are types of Show Answer

Q13) Intercalated disc in present in Show Answer

Q14) Bone matrix is rich in Show Answer

Q15) Which one of the following is not a constituent of cell membrane ? Show Answer

Q16) What is common between chloroplasts, chromoplasts and leucoplasts? Show Answer

Q17) The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in Show Answer

Q18) During which stage of mitosis does cytokinesis usually occur in animals? Show Answer

Q19) During Which stage of meiosis do the sister chromatids begin to move towards the poles? Show Answer

Q20) The bone marrow is composed of Show Answer

Q21) Tissue, which has power of division and regeneration throughout life is Show Answer

Q22) Which of the following substances if introduce the blood stream would cause coagulation at the site of its introduction? Show Answer

Q23) Lysosome arise from Show Answer

Q24) pH of human blood is Show Answer

Q25) Chromosomes other than sex chromosomes are called Show Answer

Q26) The double helix model of Watson and Crick is known as Show Answer

Q27) The correct sequence of cell cycle is Show Answer

Q28) Middle lamella is made up of Show Answer

Q29) Biological membranes are composed of Show Answer

Q30) Which of the following is related to glycosylation of protein? Show Answer

Q31) Microtubule is involved in the Show Answer

Q32) The function of nucleolus is the synthesis of Show Answer

Q33) Which of the following is not contained in a eukaryotic nucleus? Show Answer

Q34) Basic structure of chromatin is composed of Show Answer

Q35) The shape of chromosome is clearly visible at Show Answer

Q36) Chromosome start separating at which state of mitosis Show Answer

Q37) Meiosis is found at Show Answer

Q38) During cell division, sometimes there will be failure of separation of sister chromatids. This event is called Show Answer

Q39) "Endomitosis" refers to Show Answer

Q40) The camel's hump is composed of a tissue which provides water when oxidized. It is Show Answer

Q41) In which of the following stage, the chromosome is thin and like long thread? Show Answer

Q42) Peroxisomes are involved in the synthesis of Show Answer

Q43) The cork cambium, cork and secondary cortex are collectively called Show Answer

Q44) The major constituent of connective tissue is Show Answer

Q45) Bone forming cells are Show Answer

Q46) Which of the following is the hardest substance in the human body? Show Answer

Q47) Which of the following cell layers of the human skin is made up of dead , flattened cells? Show Answer

Q48) Which of the following acts as an insulator against heat, cold and as a shock-absorber in the body? Show Answer

Q49) When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be Show Answer

Q50) Pseudostratified epithelium is present in Show Answer

Q51) Smooth muscles are likely to be found in Show Answer

Q52) Consider the following statements:
1) A nerve is a bundle of axons of the neurons.
2) Collenchyma cells are dead and have irregular thickening at the corners.
3) Skin epithelium is called stratified squamous epithelium because it had one layer of cells.
4) Tendons connect muscles to bones.
Which of these statement(s) is/are correct? Show Answer

Q53) If an animal cell is placed into a solution whose concentration of dissolved substance is higher than that inside the cell, then
1) the cell will swell
2) the cell will shrivel
3) the solution is describe as hypertonic
4) both 2 and 3 are incorrect Show Answer

Q54) Hemoglobin is involved in
1) transport of oxygen
2) transport of some carbon dioxide
3) hormonal circulation
4) transport of urea.
Show Answer

Q55) Voluntary muscles are not found in
1) alimentary canal
2) limbs
3) iris of the eye
4) bronchi of lungs Show Answer

Q56) Which of the following statements is/are true?
1) Synapsis of homologous chromosomes takes place during prophase I of meiosis.
2) Division of centromeres takes place during anaphase I of meiosis.
3) Spindle fibers disappear completely in telophased of mitosis.
4) Nucleoli reappear at telophase I of meiosis. Show Answer

Q57) Which of these option are not a function of Ribosomes?
1) It helps in manufacture of protein molecules.
2) It helps in manufacture of enzymes.
3) It helps in manufacture of hormones.
4) It helps in manufacture of starch molecules. Show Answer

Q58) Which of the following statements is/are true?
1) Uneven thickening of cell wall is characteristic of sclerenchyma.
2) Periblem forms cortex of the stem and the root.
3) Tracheids are the chief water transporting elements is gymnosperms.
4) The commercial cork obtained from Quercus suber. Show Answer

Q59) Which of the following statements are wrong
1)Leucoctyes disintegrate in the spleen and liver
2)RBC,WBC and blood platelets are produced by bone marrow.
3) Neutrophils bring about destruction and detoxification of toxins of protein origin
4) The important function of lymphocytes is to produce antibodies. Show Answer

Q60) Nuclear material without cover is found in
1) mycoplasma and green algae
2) bacteria and fungi only
3) bacteria and blue algae.
4) Virus
Show Answer

Q61) Cell vacuole contains
1) water
2) cytoplasm
3) dissolved substances
4) water and metabolic wastes
Show Answer

Q62) Which of the following is/are function(s) of epidermis?
1) Protection from adverse condition
2) Gaseous exchange
3) Conduction of water
4) Transpiration Show Answer

Q63) Which of the following constitute a neuron?
1) Cell body
2) Dendrons
3) Axon
4) Tendon Show Answer

Q64) Consider the following statements:

1) They are small, cylindrical, branched and the fibers have broads ends.
2) Special electrical junctions called intercalated discs are present at intervals in the fibers.
3) The muscles show rhythmic contractions.
4) They are involuntary muscle fibers. They are not under the control of one's will
Which of the following statements are correct regarding to cardiac muscle fibers? Show Answer

Q65) Which of the following are granulocytes?
1) Basophils
2) Lymphocytes
3) Eosinophils
4) Neutrophils
Show Answer

Q66) Which of the followings are types of phloem?
1) Sieve tubes
2) Companion cells
3) Phloem parenchyama
4) Phloem fibers
Show Answer

Q67) Which of the followings organelles having single membrane bound structures?
1) Endoplasmic reticulum
2) Golgi bodies
3) Mitochondria
4) Plastids Show Answer

Q68) Read the following statements and identify the correct options
1) Sap vacuoles-contain digestive enzymes with the help of nutrients are digested
2) Contractile vacuoles-take part in osmoregulation and excrertion
3) Food vaculoes-store and concentrate mineral salts as well as nutrients
4) Air vacuoles-store metabolic gases and help in buoyancy of cells Show Answer

Q69) Which of the following statements are correct about monocot stem?
1) Vascular bundles-scattered, conjoint, close, surrounded by sclerenchymatous
bundle sheath and with water cavity.
2) Hypodermics is sclerenchymatous.
3) Peripheral vascular bundles-smaller than centrally placed ones.
4) Ground tissue is differentiated into cortex, pericycle, pith etc,
Show Answer

Q70) Which is true about heart wood/ duramen?
1) It does not help in water and mineral conduction.
2) It is dark coloured but soft.
3) It has tracheary elements filled with tannins, resins, gums, oil, etc.
4) It is a peripheral part. Show Answer

Q71) Which of the following statements about cell junctions are correct?
1) All the cells of the epithelium are held together with little intercelluar materials.
2) In almost all animal tissues specialized junction provide both structural and functional link between its individual cells.
3) Tight junctions help to stop substances from leaking across a tissue.
4) Adhering junctions provide cementing to keep neighboring cells together Show Answer

Q72) Which of the following statements regarding crossing-over is/are true?
1) Crossing-over disrupt the linkage between genes on the same chromosome.
2) Crossing-over produces new genetic combinations.
3) Crossing-over produces non-parental chromosomes.
4) Crossing-over disrupts the linkage between gense on different chromosomes Show Answer

Q73) Assertion : Larger cells are less efficient.
Reason : Surface volume ration is more in large cells.
Show Answer

Q74) Assertion : Epithelial tissues protect the under lying and over lying tissue
Reason : Materials are exchanged at the surfaces across the epithelial tissues
Show Answer

Q75) Assertion : Higher plants have materialistic regions for indefinite growth.
Reason : Higher plants have root and shoot apices possible for this growth Show Answer

Q76) Assertion : Kinetochore and centromere are different structures.
Reasons: Kinetochore and centromere are infarct two names in which they reside dies.
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Q77) Assertion : Cancer cells are virtually immortal until the body in which they reside dies.
Reason : Cancer is cause by damage to genes regulating the cell division cycle.
Show Answer

Q78) Assertion : Chiasmata is formed during diplotene.
Reason: Chiasmata are formed due to deposition of nucleoproteins. Show Answer

Q79) Assertion (A) The true nucleus is generally absent in E. coli and other prokaryotes.
Reason (R) An undifferentiated, unorganised fibrillar nucleus without any limiting membrane is observed in prokaryotic cells. Show Answer

Q80) Cellular totipotency means Show Answer

Q81) When synapsis is complete all among the chromosome, the cell is said to have entered a stage called Show Answer

Q82) If you are provided with root tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into? Show Answer

Q83) Which of the following statements are true?
1. Meristematic tissues do not store reserve food material.
2.In pteridophytes, phloem is without companion cells.
3. Bamboo and grass stems elongate by the activity of apical meristem.
4. Tracheids are the chief water transporting elements in gymnosperms. Show Answer

Q84) Consider the following statements
1. In a dicot root, the vascular bundles are vary in number from 2-6.
2. In monocot stem, the vascular bundles are scattered in ground tissues.
3. In monocot leaf, stomata almost equally distributed in upper and lower epidermis.
Which of the above is/are correct?

Show Answer

Q85) Assertion (A) Permanent tissue is composed of mature cells.
Reason (R) Meristematic tissue is a group of actively dividing cells. Show Answer

Q86) In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as Show Answer

Q87) In making the saffron spice, which one of the following parts of the plant is used? Show Answer

Q88) Consider the following statements
1. Bones and blood are mesodermal in origin.
2. Mast cells are modified basophils secreting heparin.
3. Adipose cells store fat.
Which of the above statements are true? Show Answer

Q89) Which one of the following is the bioethically non-controversial source of stem cells as an alternative to the highly controversial embryonic stem cells? Show Answer

Q90) Water is conducted in vascular plants by- Show Answer

Q91) Which one of the following is responsible for differentiation between Gram-positive and Gram-negative bacteria? Show Answer

Q92) Which one of the following vitamins and deficiency diseases is wrongly matched ? Show Answer

Q93) The pituitary gland by virtue of its tropic hormones controls the secretary activity of other endocrine glands. Which one of the following endocrine gland can function independent of the pituitary gland ? Show Answer

Q94) Which hormone is injected to cows and buffaloes to make the milk descend to the udders: Show Answer

Q95) What is Thyroxine? Show Answer

Q96) Iodised salt is useful because it Show Answer

Q97) Which hormone stimulates the thyroid gland to secrete thyoxine? Show Answer

Q98) Which one of the following hormones contains iodine ? Show Answer

Q99) The organ affected by malaria is - Show Answer