NEET Biology Morphology of Flowering Plants MCQs Set 11

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Multiple Choice Questions

Question 1: A slender lateral branch arises from the base of the main axis and after growing aerially for some time arch downwards to touch the ground. Such type of modification is
(a) Runner
(b) Sucker
(c) Stolon
(d) Offset
Show Answer & Explanation

Answer: (c) Stolon

Explanation:
1. A slender lateral branch that arches down to touch the ground is a stolon (as in Mentha and jasmine).

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 2: A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots in aquatic plants, such type of modification is
(a) Runner
(b) Stolon
(c) Sucker
(d) Offset
Show Answer & Explanation

Answer: (d) Offset

Explanation:
1. A short-internoded branch with a rosette of leaves and a tuft of roots in aquatic plants is an offset.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 3: In some leguminous plants the leaf base may become swollen, it is called :-
(a) Pulvinus
(b) Lamina
(c) Leaf margin
(d) Stipule
Show Answer & Explanation

Answer: (a) Pulvinus

Explanation:
1. The swollen leaf base of leguminous plants is the pulvinus.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 4: When the veins run parallel to each other within a lamina, the venation is termed as :-
(a) Parallel
(b) Reticulate
(c) Both 1 & 2
(d) Pinnate
Show Answer & Explanation

Answer: (a) Parallel

Explanation:
1. Veins running parallel to each other give parallel venation.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 5: If the leaf lets are attached at the tip of petiole, leaf is called :-
(a) Pinnate compound leaf
(b) Palmate compound leaf
(c) Simple leaf
(d) Unipinnate leaf
Show Answer & Explanation

Answer: (b) Palmate compound leaf

Explanation:
1. Leaflets attached at the tip of the petiole make a palmate compound leaf.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 6: When single leaf arises at each node then phyllotaxy is called :-
(a) Alternate
(b) Opposite
(c) Whorled
(d) Pinnate
Show Answer & Explanation

Answer: (a) Alternate

Explanation:
1. One leaf at each node is alternate phyllotaxy.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 7: Opposite phyllotaxy is present in :-
(a) Mustard
(b) Guava
(c) China rose
(d) Alstonia
Show Answer & Explanation

Answer: (b) Guava

Explanation:
1. Guava has opposite phyllotaxy; mustard and China rose are alternate and Alstonia is whorled.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 8: Ovary is superior in
(a) Rose
(b) Mustard
(c) Peach
(d) Guava
Show Answer & Explanation

Answer: (b) Mustard

Explanation:
1. Mustard has a superior ovary; guava has an inferior ovary and rose and peach have perigynous flowers.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 9: Ovary is inferior in
(a) Guava
(b) Rose
(c) China rose
(d) Peach
Show Answer & Explanation

Answer: (a) Guava

Explanation:
1. Guava has an inferior (epigynous) ovary.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 10: If one margin of the sepal or petal overlaps that of the next one and so on this aestivation is called :-
(a) Twisted
(b) Imbricate
(c) Valvate
(d) Vexillary
Show Answer & Explanation

Answer: (a) Twisted

Explanation:
1. When one margin of a sepal or petal overlaps the next, and so on in a circle, it is twisted aestivation.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 11: If the margins of sepals or petals overlap one another but not in any particular direction, the aestivation is called :-
(a) Imbricate
(b) Valvate
(c) Twisted
(d) Vexillary
Show Answer & Explanation

Answer: (a) Imbricate

Explanation:
1. Margins overlapping in no particular direction give imbricate aestivation.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 12: Inflorescence in members of papilionatae is
(a) Racemose
(b) Cymose
(c) Cyathium
(d) Hypanthodium
Show Answer & Explanation

Answer: (a) Racemose

Explanation:
1. Papilionatae (Fabaceae) have a racemose inflorescence.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 13: Sesbania belongs to
(a) Liliaceae
(b) Fabaceae
(c) Solanaceae
(d) Cruciferae
Show Answer & Explanation

Answer: (b) Fabaceae

Explanation:
1. Sesbania belongs to Fabaceae.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 14: In Solanum, inflorescence is
(a) Cymose
(b) Racemose
(c) Umbel
(d) Verticillaster
Show Answer & Explanation

Answer: (a) Cymose

Explanation:
1. Solanum has a cymose inflorescence.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 15: Seeds in fabaceae are
(a) Non endospermic
(b) Endospermic
(c) Perispermic
(d) Monosporic
Show Answer & Explanation

Answer: (a) Non endospermic

Explanation:
1. Fabaceae seeds are non-endospermic (no endosperm in the mature seed).

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 16: In monocots fibrous root system arise from
(a) Radicle
(b) Apex of stem
(c) Base of stem
(d) Any where from stem
Show Answer & Explanation

Answer: (c) Base of stem

Explanation:
1. In monocots the primary root is short lived and fibrous roots arise from the base of the stem.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 17: Find out the right sequence to various regions of root tip from apex to base
(a) Maturation zone, elongation zone, Meristematic zone & root cap
(b) Root cap, Meristematic zone, elongation zone & Maturation zone
(c) Root cap, elongation zone, Meristematic zone & Maturation zone
(d) Maturation zone, meristematic zone, elongation zone & root cap
Show Answer & Explanation

Answer: (b) Root cap, Meristematic zone, elongation zone & Maturation zone

Explanation:
1. From apex to base the root has the root cap, meristematic zone, elongation zone and maturation zone.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 18: Regarding to modification of root, find out the odd match
(a) Storage of food – Potato
(b) Support – Banyan
(c) Gaseous exchange – Rhizophora
(d) Photosynthesis – Tinospora
Show Answer & Explanation

Answer: (a) Storage of food – Potato

Explanation:
1. Potato is a modified stem (tuber), not a modified root, so the pair is wrong.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 19: Regarding to conversion of Axillary bud into tendril, which of the following is odd
(a) Cucumber
(b) Pumpkins
(c) Watermelon
(d) Bougainvillea
Show Answer & Explanation

Answer: (d) Bougainvillea

Explanation:
1. Bougainvillea has a thorn, not a tendril, from the axillary bud.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

Question 20: Fleshy cylindrical photosynthetic stem is found in
(a) Opuntia
(b) Euphorbia
(c) Bougainvillea
(d) Cuscuta
Show Answer & Explanation

Answer: (b) Euphorbia

Explanation:
1. Euphorbia has a fleshy cylindrical photosynthetic stem; Opuntia has a flattened one.

Teacher's Note:
1. Family characters are tested through floral formula, inflorescence and economic plants.
2. Liliaceae: perianth and colchicine; Fabaceae: papilionaceous corolla and diadelphous stamens; Solanaceae: swollen placenta; Brassicaceae: tetradynamous stamens.

Question 21: A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in
(a) Ginger
(b) Banana
(c) Eichhornia
(d) Potato
Show Answer & Explanation

Answer: (c) Eichhornia

Explanation:
1. Eichhornia (water hyacinth) spreads by offsets with a rosette of leaves and tuft of roots.

Teacher's Note:
1. Learn the vegetative modifications by their description: runner, stolon, sucker and offset differ in the place of origin and direction of growth.
2. For flowers, remember the position of ovary (hypogynous, perigynous, epigynous), aestivation types and placentation types with one example each.

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