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Morphology of Flowering Plants Class 11 MCQs Questions with Answers
Question 1.
Blue dye is obtained from the leaves of
(a) Indigofera tinctoria
(b) Opium
(c) Aloe
(d) Delbergia sissoo
Answer
Answer: (a) Indigofera tinctoria
Question 2.
Which of the following is a correct pair?
(a) Cuscuta – parasite
(b) Dischidia – insectivorous
(c) Opuntia – predator
(d) Capsella – hydrophyte
Answer
Answer: (a) Cuscuta – parasite
Question 3.
Cymose inflorescences commonly occurs in
(a) Cruciferae
(b) Malvaceae
(c) Solanaceae
(d) Liliaceae
Answer
Answer: (c) Solanaceae
Question 4.
The embryo in sunflower has
(a) one cotyledon
(b) two cotyledons
(c) many cotyledons
(d) no cotyledon
Answer
Answer: (b) two cotyledons
Question 5.
The aleurone layer in maize grain is especially rich in
(a) auxins
(b) proteins
(c) starch
(d) lipids
Answer
Answer: (b) proteins
Question 6.
Spinous xerophytic herb belonging to solanceae is
(a) Solanum tuberosum
(b) S. nigrum
(c) S. xanthocarpum
(d) S. melongena
Answer
Answer: (c) S. xanthocarpum
Question 7.
Dry indehiscent single seeded fruit formed by bi-carpellary syncarpous inferior ovary is
(a) Cremocarp
(b) Berry
(c) Caryopsis
(d) Cypsela
Answer
Answer: (d) Cypsela
Question 8.
Flowers are zygomorphic in:
(a) mustard
(b) gulmohur
(c) ioruato
(d) Datura
Answer
Answer: (b) gulmohur
Question 9.
Heterospory and seed habit are often discussed in relation to a structure called
(a) spathe
(b) bract
(c) petiole
(d) ligule
Answer
Answer: (d) ligule
Question 10.
What type of placentation is seen in sweet pea?
(a) Axile
(b) Free central
(c) Marginal
(d) Basal
Answer
Answer: (c) Marginal
Question 11.
Largest bud is found in
(a) Cabbage
(b) Cauliflower
(c) Sunflower
(d) Wolffia
Answer
Answer: (a) Cabbage
Question 12.
Flowers in which only one set of essential organs is present are said to be
(a) Polygamous
(b) Bisexual
(c) Dioecious
(d) Unisexual
Answer
Answer: (d) Unisexual
Question 13.
Fibres are usually obtained from the members of
(a) Solanaceae
(b) Malvaceae
(c) Leguminosae
(d) Cruciferae
Answer
Answer: (b) Malvaceae
Question 14.
Placentation in tomato and lemon is
(a) Parietal
(b) Free central
(c) Marginal
(d) Axile
Answer
Answer: (d) Axile
Question 15.
Edible part of knol khol is:
(a) Inflorescence
(b) Leaves
(c) Roots
(d) Stem
Answer
Answer: (d) Stem
Question 16.
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?
(a) 42
(b) 63
(c) 84
(d) 21
Answer
Answer: (b) 63
Question 17.
Myrosin in plant parts is characteristic of
(a) Cruciferae
(b) Malvaceae
(c) Solanaceae
(d) Liliaceae
Answer
Answer: (a) Cruciferae
Question 18.
The coconut water and the edible part of coconut are equivalent to
(a) Endosperm
(b) Endocarp
(c) Mesocarp
(d) Embryo
Answer
Answer: (a) Endosperm
Question 19.
In which of the families the stamens are in two whorls and epiphyllous
(a) Malvaceae
(b) Solanaceae
(c) Liliaceae
(d) Casalpinoideae
Answer
Answer: (c) Liliaceae
Question 20.
Which of the following represents the floral characters of Liliaceae?
(a) Bisexual, zygomorphic, gamophyllous, inferior ovary, marginal placentation
(b) Tetramerous, actinomorphic, polyphyllous, unilocular ovary, axile placentation
(c) Unisexual, actinomorphic, trilocular, inferior ovary, axile placentation
(d) Trimerous, actinomorphic, polyandrous, superior ovary, axile placentation
Answer
Answer: (d) Trimerous, actinomorphic, polyandrous, superior ovary, axile placentation
Question 21.
The form of thalamus in which ovary is at top and stamens, petals and sepals are borne below is called
(a) Perigyny
(b) Semi-epigyny
(c) Hypogyny
(d) Epigyny
Answer
Answer: (c) Hypogyny
Question 22.
The botanical name of ‘black mustard’ is:
(a) Brassica nigra
(b) Brassica juncea
(c) Brassica napus
(d) Brassica compastris
Answer
Answer: (a) Brassica nigra
Question 23.
In family liliaceae flowers are:
(a) Trimerous and hypogynous
(b) Pentamerous and epigynous
(c) Trimerous and epigynous
(d) Pentamerous and hypogynous
Answer
Answer: (a) Trimerous and hypogynous
Question 24.
What is samara?
(a) Fruits having many seeds
(b) Fruit having single seed
(c) Fruits having wings formed from other structure
(d) Fruit without seed
Answer
Answer: (c) Fruits having wings formed from other structure
Question 25.
The root is covered at the apex by a thimble-like structure called
(a) Region of maturation
(b) Root cap
(c) Region of meristematic activity
(d) Root hair
Answer
Answer: (b) Root cap
Question 26.
The white, translucent, fleshy and edible structure present between seed and pericarp is
(a) Aril
(b) Integument
(c) Exocarp
(d) Cupule
Answer
Answer: (a) Aril
Question 27.
Botanical name of ‘Ashok’ is:
(a) Albizzia lebec
(b) Ashoka indiana
(c) Abrus indica
(d) Saraca indica
Answer
Answer: (d) Saraca indica
Question 28.
Which of the following is not a seed surface fiber-
(a) Kapok
(b) Silk cotton
(c) Cotton
(d) Dhaincha
Answer
Answer: (d) Dhaincha
Question 29.
Pineapple (ananas) fruit develops from
(a) a multipistillate syncarpous flower
(b) a cluster of compactly borne flowers on a common axis
(c) a multilocular monocarpellary flower
(d) a unilocular polycarpellary flower
Answer
Answer: (b) a cluster of compactly borne flowers on a common axis
Question 30.
Inulin found in Dahlia tuberous roots is a:
(a) Carbohydrate
(b) Protein
(c) Lipid
(d) Enzyme
Answer
Answer: (a) Carbohydrate
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