Leaves have reticulate venation

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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS

Anatomy of flowering plants practice · Mixed difficulty

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121 Easy

121 of 394

Understanding +4 | -1

I. Epidermis
II. Mesophyll
III. Vascular system
Which of the above component is made up of parenchyma and have chlorphyll?

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Correct option: D

Only II

Option D (Only II) is correct because mesophyll, the ground tissue of the leaf, is made up of parenchyma cells and contains chloroplasts for photosynthesis.

122 Hard

122 of 394

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Dermatogen, periblem and plerome are

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Correct option: B

Meristematic tissues

Option B (Meristematic tissues) is correct because dermatogen, periblem, and plerome are layers of the apical meristem in the shoot apex.

123 Easy

123 of 394

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In Monocots

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Correct option: A

Stems have scattered conducting strands

Option A is correct because monocots are characterized by having scattered vascular bundles (conducting strands) in their stems.

124 Medium

124 of 394

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Intercalary meristem is a derivative of

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Correct option: C

Primary meristem

Option C (Primary meristem) is correct because intercalary meristems are derived from primary meristems.

125 Medium

125 of 394

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Vessels differ from tracheids

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Correct option: C

In having vertical row of cells with crosswalls dissolved

Option C (In having vertical row of cells with crosswalls dissolved) is correct because vessels are formed from a vertical row of cells where the cross-walls between the cells dissolve, creating a continuous tube for efficient water transport, unlike tracheids.

126 Medium

126 of 394

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Aerenchyma is found in:

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Correct option: A

Parenchyma

Option A (Parenchyma) is correct because aerenchyma is a specialized type of parenchyma tissue characterized by large air spaces.

127 Easy

127 of 394

Understanding +4 | -1

Read the statements given below carefully and find out the correct ones:

a. Bast fibres are made of sclerenchymatous cells.

b. Bast fibres are unbranched & with pointed apex.

c. Epidermal cells are perenchymatous with small amount of cytoplasm.

d. Functions of companion cells are controlled by nucleus of the sieve tubes.

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Correct option: A

a, b, c only

Option A (a, b, c only) is correct because bast fibers are sclerenchymatous, unbranched with pointed apex, and epidermal cells are parenchymatous with little cytoplasm. Companion cells are controlled by sieve tube nucleus.

128 Medium

128 of 394

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In monocot stem, the hypodermis is

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Correct option: B

Sclerenchymatous

Option B (Sclerenchymatous) is correct because the hypodermis in a monocot stem is typically made of sclerenchymatous cells, providing mechanical support.

129 Easy

129 of 394

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First formed primary xylem elements are called ...A… . Later formed primary xylem elements are called …B… .
A and B in the above statement refers to

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Correct option: B

A–protoxylem; B–metaxylem

Option B (A–protoxylem; B–metaxylem) is correct because protoxylem forms first, followed by metaxylem.

130 Medium

130 of 394

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Conjoint vascular bundles are common in

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Correct option: D

Both (2) and (3)

Option D (Both (2) and (3)) is correct because conjoint vascular bundles are characteristic of stems and leaves.

131 Hard

131 of 394

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As compared to spring wood, autumn wood has?

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Correct option: D

Fewer xylary elements with narrow vessels

Option B (More number of xylary elements with narrow vessels) is correct because autumn wood (late wood) is characterized by a higher number of xylary elements with narrower vessels compared to spring wood.

132 Easy

132 of 394

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Viral infection is usually absent in

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Correct option: D

Apical meristem

Option D (Apical meristem) is correct because apical meristems are regions of active cell division and growth, making them less susceptible to viral infections due to rapid cell turnover and lack of vascular connections in early stages.

133 Hard

133 of 394

Remembering +4 | -1

A piece of wood having no vessels (trachea) must be belonged to

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Correct option: C

Pine

Option C (Pine) is correct because pine is a gymnosperm, and gymnosperms lack vessels (trachea) in their wood; they only have tracheids.

134 Hard

134 of 394

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Assertion (A): In roots vascular bundles show radial arrangement of xylem and phloem.

Reason (R): In roots arrangement of xylem and phloem on different radii facilitates absorption process.

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Correct option: A

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Option A is correct because radial arrangement facilitates absorption in roots.

135 Easy

135 of 394

Remembering +4 | -1

In an annual ring, the light coloured part is known as

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Correct option: A

Early wood

Option A (Early wood) is correct because early wood, formed during the spring season, is lighter in color due to wider xylem vessels.

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ANIMAL KINGDOM 756 MCQs PLANT KINGDOM 415 MCQs MOLECULAR BASIS OF INHERITANCE 404 MCQs CHEMICAL COORDINATION AND INTEGRATION 387 MCQs PRINCIPLE OF INHERITANCE AND VARIATION 374 MCQs EVOLUTION 362 MCQs

136 Medium

136 of 394

Understanding +4 | -1

Vascular system includes …A… bundles, which can be seen in the veins and the …B… . The size of vascular bundles are dependent on the size of …C… . The veins vary in thickness in the reticulate venation of the …D… leaves
Choose the correct combination of A to D

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Correct option: C

A-vascular, B-midrib, C-veins, D-dicot

Option C (A-vascular, B-midrib, C-veins, D-dicot) is correct because vascular bundles are found in veins and the midrib, and vein thickness varies in the reticulate venation of dicot leaves.

137 Easy

137 of 394

Remembering +4 | -1

Identify from the following, a plant tissue in which lignin does not occur in the cell walls?

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Correct option: A

Collenchyma

Option A (Collenchyma) is correct because lignin is absent in the cell walls of collenchyma tissue.

138 Medium

138 of 394

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Border parenchyma or bundle sheath is made up of

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Correct option: C

Chlorenchymatous cell

Option C is correct. Border parenchyma or bundle sheath cells are typically chlorenchymatous, containing chloroplasts for photosynthesis.

139 Easy

139 of 394

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Bordered pits are found in

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Correct option: B

Vessel wall

Option B (Vessel wall) is correct because bordered pits are characteristic features of vessel elements in xylem tissue, facilitating lateral water movement between adjacent vessels.

140 Easy

140 of 394

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Ground tissue of leaf is called

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Correct option: C

Mesophyll

Option C (Mesophyll) is correct because the ground tissue of the leaf, responsible for photosynthesis, is called mesophyll.

141 Easy

141 of 394

Remembering +4 | -1

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

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Correct option: C

Sieve tubes

Option C is correct. Sieve tubes are organized and differentiated cellular structures that possess cytoplasm but lack a nucleus at maturity.

142 Medium

142 of 394

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Companion cells in plants are associated with

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Correct option: C

Sieve elements

Option C (Sieve elements) is correct because companion cells are closely associated with sieve elements in the phloem and aid in their function.

143 Medium

143 of 394

Analyzing +4 | -1

Assertion: Heartwood the greater part of
secondary xylem, is lighter in colour and consists
of dead elements with highly lignified walls.

Reason: The peripheral region of the secondary
xylem is dark brown in colour and is called
sapwood.

View answer and explanation

Correct option: D

If both Assertion and Reason are false

Option D is correct because the assertion is false (heartwood is darker, not lighter) and the reason is also false (sapwood is lighter, not darker).

144 Easy

144 of 394

Understanding +4 | -1

I. Monocot root
II. Dicot stem
III. Monocot stem and dicot root
IV. Dicot stem and dicot root
V. Dicot root
Which of the above have well-developed pith?

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Correct option: A

I and II

Option A (I and II) is correct because monocot roots and dicot stems both have well-developed pith.

145 Medium

145 of 394

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The quiescent centre in root meristem serves as a

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Correct option: C

Reserve for replenishment of damaged cells of the meristem

Option C is correct because the quiescent center acts as a reserve for replenishing damaged meristem cells.

146 Medium

146 of 394

Understanding +4 | -1

Collenchyma is living mechanical tissue select the incorrect about it

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Correct option: B

Lacks protoplasm at maturity

Option B (Lacks protoplasm at maturity) is correct because collenchyma is a living tissue and retains protoplasm at maturity, unlike sclerenchyma.

147 Easy

147 of 394

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The tissue generally present in all organs of plant is_____

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Correct option: A

Parenchyma

Option A (Parenchyma) is correct because parenchyma tissue is the most abundant and versatile tissue found in almost all organs of a plant.

148 Easy

148 of 394

Understanding +4 | -1

During the formation of the primary plant body, specific regions of the apical meristem produces:

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Correct option: D

All of these

Option D is correct because apical meristem produces all three tissue types: dermal, ground, and vascular.

149 Medium

149 of 394

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What is true about a monocot leaf?

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Correct option: C

Mesophyll not differentiated into palisade and spongy tissues

Option C (Mesophyll not differentiated into palisade and spongy tissues) is correct because monocot leaves typically have undifferentiated mesophyll.

150 Easy

150 of 394

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The meristem which is intercalated in between the
permanent tissues

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Correct option: C

Is primary meristem

Option C (Is primary meristem) is correct because intercalary meristems, found between permanent tissues, are a type of primary meristem.

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