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What is the correct answer?

4

Match the followings and choose the correct option
Column-IColumn-II
A. CuticleI. Guard cells
B. Bulliform cellsII. Outer layer
C. StomataIII. Waxy layer
D. EpidermisIV. Empty colourless cell

A. A III, B IV, C I, D II

B. A I, B II, C III, D IV

C. A III, B II, C IV, D I

D. A III, B II, C I, D IV

Correct Answer :

A. A III, B IV, C I, D II


A - Cuticle: It is a protecting film covering the epidermis of leaves, young shoots and other aerial plant organs without periderm. It consists of lipid and hydrocarbon polymers impregnated with wax, and are synthesized exclusively by the epidermal cells.
B - Bulliform cells: They are large, bubble-shaped, empty colourless epidermal cells that occur in groups on the upper surface of the leaves of many grasses. Loss of turgor pressure in these cells causes leaves to roll up during water stress.
C - Stomata: They are minute aperture structures on plants found typically on the outer leaf skin layer, also known as the epidermis. They consist of two specialized cells, called guard cells that surround a tiny pore called a stoma.
D - Epidermis: It is the outer layer of tissue in a plant, except where it is replaced by periderm. It is a single-layered group of cells that covers plants' leaves, flowers, roots and stems. It forms a boundary between the plant and the external environment.

Related Questions

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4

Choose the correct labelling of (A J) in the given figure of T.S. of monocot root.

A. A Root hair, B Epiblema, C Cortex, D Endodermis, E Passage cell, F Pericycle, G Pith, H Phloem, I Metaxylem.

B. A Root hair, B Epiblema, C Cortex, D Endodermis, E Passage cell, F Pith, G Pericycle, H Metaxylem, I Phloem.

C. A Root hair, B Epiblema, C Cortex, D Endodermis, E Pericycle, F Phloem, G Protoxylem, I Metaxylem

D. A Root hair, B Cortex, C Epiblema, D Pericycle, E Endodermis, F Pith, G Phloem, H Protoxylem, I Metaxylem

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4

Which of the following statements are correct ?
  1. Xylem transports water and minerals.
  2. Gymnosperms lack sieve tubes and companion cells in phloem.
  3. The first formed primary xylem is called metaxylem.
  4. Phloem fibres (bast fibres) are made up of collenchymatous cells.

A. (i) and (iii)

B. (i) and (ii)

C. (iii) and (iv)

D. (i) and (iv)

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4

Which of following helps bamboo and grasses to elongate ?

A. Apical meristems

B. Lateral meristems

C. Secondary meristems

D. Intercalary meristems

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4

Match column-I with column-II and choose the correct option.
A. Spring wood orI. Lighter in colour early wood
B. Autumn wood orII. High density late wood
..III. Low density
..IV. Darker in colour
..V. Larger number of xylem elements
..VI. Vessels with wider cavity
..VII. Lesser number of xylem elements
..VIII. Vessels with small cavity

Which of the following combination is correct ?

A. A II, IV, VII, VIII; B I, III, V, VI

B. A I, II, VII, VIII; B III, IV, V, VI

C. A I, III, V, VI; B II, IV, VII, VIII

D. A I, III, VII, VIII; B II, IV, V, VI

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4

Gymnosperms are also called soft wood spermatophytes because they lack

A. cambium

B. phloem fibres

C. thick-walled tracheids

D. xylem fibres

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4

A narrow layer of thin walled cells found between phloem/ bark and wood of a dicot is

A. cork cambium

B. vascular cambium

C. endodermis

D. both (a) & (c)

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4

Match the elements of xylem given in column I with their character given in the column II and choose the correct option.
Column-IColumn-II
A. Xylem vesselsI. Store food materials
B. Xylem tracheidsII. Obliterated lumen
C. Xylem fibresIII. Perforated plates
D. Xylem parenchymaIV. Chisel-like ends

A. A IV; B III; C II; D I

B. A III; B II; C I; D IV

C. A II; B I; C IV; D III

D. A III; B IV; C II; D I

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4

Various functions like photosynthesis, storage, excretion performed by _____________.

A. sclerenchyma

B. parenchyma

C. collenchyma

D. aerenchyma

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4

Which of the following pair of match is not correct?

A. Pith - Large and well developed in monocotyledonous root.

B. Root hairs - Helps in preventing water loss due to transpiration

C. Sieve tube elements - Its functions are controlled by the nucleus of companion cells.

D. Stomatal apparatus - Consists of stomatal aperture, guard cells and surrounding subsidiary cells

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4

Tissue(s) present in an annual ring is/are

A. secondary xylem and phloem.

B. primary xylem and phloem.

C. secondary xylem only.

D. primary phloem and secondary xylem.

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4

Read the following statements and answer the question.
  1. It has a sclerenchymatous hypodermis, a large number of scattered vascular bundles and a large parenchymatous ground tissue.
  2. Vascular bundles are conjoint and closed.
  3. Peripheral vascular bundles are generally smaller than the centrally located ones.
  4. Phloem parenchyma is absent, and water- containing cavities are present within the vascular bundles.

Which plant anatomy is being described by the above statements?

A. Dicotyledonous root

B. Monocotyledonous root

C. Dicotyledonous stem

D. Monocotyledonous stem

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4

Some vascular bundles are described as open because these

A. are surrounded by pericycle but not endodermis.

B. are capable of producing secondary xylem and phloem.

C. possess conjunctive tissue between xylem and phloem.

D. are not surrounded by pericycle.

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4

An organised and differentiated cellular structure having cytoplasm but no nucleus is called _________.

A. vessels

B. xylem parenchyma

C. sieve tubes

D. tracheids

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4

Which of the following statements is correct?

A. Lenticels occur in most woody trees.

B. Sclerenchymatous cells are usually present in cortex.

C. The vascular tissue system is divided into three main zones- cortex, pericycle and pith.

D. The conjoint vascular bundles usually have the xylem located only on the outer side of the phloem.

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4

A tissue is a group of cells which are

A. similar in origin, but dissimilar in form and function.

B. dissimilar in origin, form and function.

C. dissimilar in origin, but similar in form and function.

D. similar in origin, form and function.

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4

Match column-I with column-II and choose the correct option.
Column -IColumn -II
A. Bulliform cellsI. Initiation of lateral roots
B. PericycleII. Root
C. Endarch xylemIII. Grasses
D. Exarch xylemIV. Dicot leaf
E. Bundle sheath cellsV. Stem

A. A III, B V, C IV, D I, E II

B. A II, B V, C I, D III, E IV

C. A II, B IV, C I, D III, E V

D. A III, B I, C V, D II, E IV

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4

Match the terms given in column I with their features given in column II and choose the correct option.
Column-IColumn-II
(Terms)(Features)
A. Fibres(i) Cells are living and thin walled with cellulosic cell wall, store food materials in the form of starch or fat
B. Sclereids(ii) Main water conductive cells of the pteridophytes and the gymnosperms
C. Tracheids(iii) Thick walled, elongated and pointed cells, generally occurring in groups
D. Vessels(iv) Long cylindrical tube like structure and cells are devoid of protoplasm. Characteristic feature of angiosperms
E. Xylem parenchyma(v) Reduced form of sclerenchyma cells with highly thickened lignified cellular walls that form small bundles of durable layers of tissue in most plants.

A. A - (i), B - (ii), C - (iii), D - (iv), E - (v)

B. A - (iii), B - (v), C - (ii), D - (iv), E - (i)

C. A - (iii), B - (i), C - (v), D - (ii), E - (iv)

D. A - (v), B - (iv), C - (iii), D - (i), E - (ii)

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4

A student was given a tissue to observe under the microscope. He observes the tissue and concludes that the tissue is a type of simple plant tissue and provides mechanical support to young stem and petiole of leaf.
Identify the tissue.

A. Parenchyma

B. Collenchyma

C. Sclerenchyma

D. Xylem parenchyma

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4

Which one of the following option shows the correct labelling of the parts marked as A, B, C and D in the given figure of a typical dicot root?

A. A Primary phloem, B Vascular cambium, C Secondary phloem, D Primary xylem

B. A Secondary phloem, B Vascular cambium, C Primary phloem, D Primary xylem

C. A Primary phloem, B Primary xylem, C Secondary phloem, D Vascular cambium

D. A Secondary phloem, B Primary xylem, C Primary phloem, D Vascular cambium

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4

Trees at sea do not have annual rings because

A. soil is sandy.

B. there is climatic variation.

C. there is no marked climatic variation.

D. there is enough moisture in the atmosphere.

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4

Which of the following is responsible for the formation of an embryonic shoot called axillary bud?

A. Lateral meristem

B. Apical meristem

C. Intercalary meristem

D. Both

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4

The trees growing in desert will

A. show alternate rings of xylem and sclerenchyma.

B. have only conjunctive tissue and phloem is formed by the activity of cambium.

C. show distinct annual rings.

D. not show distinct annual rings.

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4

Cells of permanent tissues are specialized

A. functionally.

B. only structurally.

C. both structurally and functionally.

D. for mitosis.

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4

Sieve tubes are suited for translocation of food because they possess

A. bordered pits.

B. no ends walls.

C. broader lumen and perforated cross walls.

D. no protoplasm.

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4

The given diagrams show stomatal apparatus in dicots and monocots. Which one is correct option for A, B and C?

A. A Epidermal cells; B Subsidiary cells; C chloroplast

B. A Guard cells; B Subsidiary cells; C Stomatal pore

C. A Guard cells; B Epidermal cells; C Guard cells

D. A Epidermal cells; B Subsidiary cells; C Guard cells

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4

The given figure shows T.S. of monocot stem. Identify the correct labelling of A to F marked in the given figure.

A. A Epidermis, B Hypodermis, C Vascular bundles, D Phloem, E Xylem, F Ground tissue

B. A Cuticle, B Epidermis, C Sclerenchymatous sheath, D Sclerenchymatous hypodermis, E Parenchymatous sheath, F Phloem

C. A Cuticle, B Epidermis, C Sclerenchymatous hypodermis, D Sclerenchymatous sheath, E Parenchymatous sheath, F Phloem

D. A Cuticle, B Epidermis, C Sclerenchymatous hypodermis, D Sclerenchymatous sheath, E Parenchymatous sheath, F Protoxylem

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4

Which meristem helps in increasing girth?

A. Lateral meristem

B. Intercalary meristem

C. Primary meristem

D. Apical meristem

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4

Which of the following statement(s) is/are correct ?
  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 in gymnosperms.
  4. Companion cell is devoid of nucleus at maturity.
  5. The commercial cork is obtained from Quercus suber.

A. (i) and (iv) only

B. (ii) and (v) only

C. (iii) and (iv) only

D. (ii), (iii) and (v) only

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4

Apical, intercalary and lateral meristems are differentiated on the basis of

A. origin

B. function

C. position

D. development

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4

One of the primary function of the ground tissue in a plant is

A. photosynthesis.

B. to protect the plant.

C. to anchor the plant.

D. water and sugar conduction.