OBJECTIVE QUESTIONS FOR NEET AIIMS JIPMER www wisedane
OBJECTIVE QUESTIONS FOR NEET AIIMS JIPMER www. wisedane. com
BIOLOGY ANATOMY OF FLOWERING PLANTS SET 1 MCQ’S
Q 1. The study of tissues is known as A. Histology B. Cytology C. Physiology D. Anatomy www. wisedane. com
ANSWER (A) EXPLANATION Ø Histology is the study of the microscopic anatomy (microanatomy) of cells and tissues of plants and animals. Ø Cytology is the study of cells. Cytology is that branch of life science that deals with the study of cells in terms of structure, function and chemistry. Ø Physiology is the scientific study of the normal function in living systems Ø Anatomy is the branch of biology concerned with the study www. wisedane. com
Q 2. Simple tissues are those with A. Cells of same origin and function B. Cells of different origin and same function C. Cell of same and different function D. Cells of different origin and different function www. wisedane. com
ANSWER (A) EXPLANATION Ø Tissues of same kinds compose simple tissue. A group of cells which are similar in origin; similar in structure and similar in function are called simple permanent tissue Ø These tissues are of 3 types(a) Parenchyma (b) Collenchyma (c) Sclerenchyma. www. wisedane. com
Q 3. Cells of different type and same function is found in A. Xylem tissue B. Parenchyma tissue C. Sclerenchyma tissue D. Collenchyma tissue www. wisedane. com
ANSWER (A) EXPLANATION Ø Complex tissues are those with cells of different type and same function. www. wisedane. com
Q 4. Permanent tissues are those A. Derived from Meristematic cells B. Differentiated cells C. Lost power of division D. All the above www. wisedane. com
ANSWER (A) EXPLANATION Ø Permanent cells are those that derivatives of Meristematic cell which lost its power of division and matures into specific type of cell www. wisedane. com
Q 5. Simple tissues are formed from A. Promeristem B. Cork cambium C. Secondary Meristematic cells D. Fibrous cell www. wisedane. com
ANSWER (A) EXPLANATION Ø Permanent tissues developing from primary Meristematic cells such as Promeristem are known as primary permanent cells. All of the simple tissues such as Parenchyma, Collenchyma are examples. www. wisedane. com
Q 6. Secondary xylem is type of A. Complex tissue B. Secondary permanent tissue C. Cork cambium D. Both a and b www. wisedane. com
ANSWER (D) EXPLANATION Ø Permanent tissues formed from secondary Meristematic cells are secondary permanent tissue or complex tissue. Secondary xylem, Cork and secondary phloem are examples. www. wisedane. com
Q 7. A permanent slide shows thin walled isodiametric cells with a large vacuole. The slide contains : A. Parenchyma cells B. Nerve cells C. Meristematic cells D. Collenchyma cells www. wisedane. com
ANSWER (A) EXPLANATION Ø Parenchyma cells have thin primary walls and usually remain alive after they become mature. Parenchyma forms the "filler" tissue in the soft parts of plants Ø It forms, among other things, the cortex and pith of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds. Ø Parenchyma cells are living cells and may remain meristematic at maturity—meaning that they are capable of cell division if stimulated. Ø They have thin but flexible cellulose cell walls, and are generally polyhedral when close-packed, but can be roughly spherical when isolated from their neighbours. Ø They have large central vacuoles, which allow the cells to store and regulate ions, waste products, and water. www. wisedane. com
Q 8. The ground tissue of root and stem of plants is made up of mostly A. Collenchyma B. Sclerenchyma C. Chlorenchyma D. Parenchyma www. wisedane. com
ANSWER (D) EXPLANATION Ø Parenchyma cells have thin primary walls and usually remain alive after they become mature. Parenchyma forms the "filler" tissue in the soft parts of plants Ø It forms, among other things, the cortex and pith of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds. www. wisedane. com
Q 9. Which type of cell mostly lacks secondary wall? A. Sclerenchyma B. Tracheids C. Fibres D. Parenchyma www. wisedane. com
ANSWER (D) EXPLANATION Ø Parenchyma is a living tissue and made up of thin walled cells. Mature parenchyma cells have primary walls that are relatively thin and flexible, and most lack secondary walls. www. wisedane. com
Q 10. A simple mechanical tissue devoid of lignin is A. Parenchyma B. Collenchyma C. Sclerenchyma D. Chlorenchyma www. wisedane. com
ANSWER (B) EXPLANATION Ø Collenchyma cells are elongated cells with irregularly thick cell walls that provide support and structure. Ø Their thick cell walls are composed of the compounds cellulose and pectin. These cells are often found under the epidermis, or the outer layer of cells in young stems and in leaf veins. www. wisedane. com
Q 11. The metabolic activity of plants are carried out mostly by A. Sclerenchyma B. Tracheids C. Fibres D. Parenchyma www. wisedane. com
ANSWER (D) EXPLANATION Ø Parenchyma cells perform most of the metabolic functions of the plant, synthesizing, and storing various organic products. Ø For example, photosynthesis occurs within the chloroplasts of parenchyma cells in the leaf. Some parenchyma cells in stems and roots have colourless plastids that store starch. www. wisedane. com
Q 12. Which type of permanent cell retains ability to divide and differentiate? A. Sclerenchyma B. Tracheids C. Fibres D. Parenchyma www. wisedane. com
ANSWER (D) EXPLANATION Ø Most parenchyma cells retain the ability to divide and differentiate into other types of plant cells under conditions during wound repair, for example. It is even possible to grow an entire plant from a single parenchyma cell. www. wisedane. com
Q 13. Type of parenchyma with large number of chloroplast is A. Assimilatory parenchyma B. Aerenchyma C. Idioblast D. Collenchyma www. wisedane. com
ANSWER (A) EXPLANATION Ø Assimilatory parenchyma or chlorenchyma: Ø parenchyma, containing chloroplasts, adapted for photosynthesis. Most typically, it constitutes the mesophyll of the leaf, yet it is also present in any other green plant organs (e. g. stems, unripe fruits). www. wisedane. com
Q 14. Which type of cells gives mechanical support to young parts of shoot? A. Sclerenchyma B. Collenchyma C. Fibres D. Parenchyma www. wisedane. com
ANSWER (B) EXPLANATION Ø Grouped in strands, collenchyma cells (seen here in cross section) help support young parts of the plant shoot. Ø Collenchyma cells are generally elongated cells that have thicker primary walls than parenchyma cells, though the walls are unevenly thickened. www. wisedane. com
Q 15. The type of living cell that involves in stem elongation is A. Sclerenchyma B. Collenchyma C. Fibres D. Parenchyma www. wisedane. com
ANSWER (B) EXPLANATIO N Ø Collenchyma cells provide flexible support without restraining growth. At maturity, these cells are living and flexible, elongating with the stems and leaves they support. www. wisedane. com
Q 16. Choose the correct order of cell thickening from thin to thick cell wall A. Parenchyma -Sclerenchyma -collenchyma B. Collenchyma -Parenchyma -Sclerenchyma C. Parenchyma -collenchyma -Sclerenchyma D. Sclerenchyma -Parenchyma -collenchyma www. wisedane. com
ANSWER (C) EXPLANATION www. wisedane. com
Q 17. Type of elongated chlorenchyma A. Palisade parenchyma B. Spongy parenchyma C. Collenchyma D. Aerenchyma www. wisedane. com
ANSWER (A) EXPLANATION Ø Chlorenchyma are type of parenchyma that possess large number of chloroplast. Ø It is mostly present in leave and can be found in the cortex of young stem. Ø Palisade parenchyma is elongated chlorenchyma cells. www. wisedane. com
Q 18. Chlorenchyma tissue with large intercellular space is A. Palisade parenchyma B. Spongy parenchyma C. Collenchyma D. Aerenchyma www. wisedane. com
ANSWER (B) EXPLANATION Ø Spongy parenchyma is another type of chlorenchyma with cells of irregular shape and size hence forms large intercellular space. www. wisedane. com
Q 19. Chlorenchyma is known to develop in the A. Cytoplasm of Chlorella B. Mycelium of a green mould such as Aspergillus C. Spore capsule of a moss D. Pollen tube of Pinus www. wisedane. com
ANSWER (C) EXPLANATION Ø Chlorenchyma or assimilatory parenchyma is parenchymatous cells that possess abundant chloroplasts in them. They are capable of photosynthesis. A spore capsule of moss can perform photosynthesis because of the presence of chlorenchyma cells in them. www. wisedane. com
Q 20. The type of parenchyma with well-developed intercellular space found in hydrophytes is A. Palisade parenchyma B. Spongy parenchyma C. Collenchyma D. Aerenchyma www. wisedane. com
ANSWER (D) EXPLANATION Ø Aerenchyma is type of parenchyma with well-developed intercellular space which forms a connected system through put the entire plant. Found exclusively in submerge hydrophytes. www. wisedane. com
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