Morphology of Flowering Plants Questions and Answers

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Morphology of Flowering Plants Sample Question

1. Root hairs develop from the region of
A. Maturation
B. Elongation
C. Root cap
D. Meristematic activity

2. Coconut fruit is a
A. Drupe
B. Berry
C. Nut
D. Capsule

3. Free-central placentation is found in-
A. Dianthus
B. Argemone
C. Brassica
D. Citrus

4. Radial symmetry is found in the flowers of-
A. Trifolium
B. Cassia
C. Brassica
D. Pisum

5. The term ‘polyadelphous’ is related to
A. Androecium
B. Calyx
C. Corolla
D. Gynoecium

6. Stems modified into flat green organs performing the functions of leaves are known as-
A. Phylloclades
B. Phyllodes
C. Cladodes
D. Scales

7. Which of the following is not a stem modification?
A. Tendrils of cucumber
B. Flattened structures of Opuntia
C. Thorns of citrus
D. Pitcher of Nepenthes

8. The standard petal of a papilionaceous corolla is also called
A. Vexillum
B. Corona
C. Carina
D. Dpappus

9. Proximal end of the filament of stamen is attached to the
A. Placenta
B. thalamus or petal
C. anther
D. connective

10. Tricarpellary, syncarpous gynoecium is found in flowers of-
A. Fabaceae
B. Poaceae
C. Liliaceae
D. Solanaceae

11. Assertion : Presence of pneumatophores is a special adaptation of hydrophytes.
Reason: Pneumatophores are positively geotropic shoots that have lenticles and help in gaseous exchange
A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

12. Assertion : In opposite phyllotaxy two leaves are borne on the opposite sides of a single node.
Reason: Opposite phyllotaxy is seen in China rose and oleander.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

13. Tetradynamous condition is found in-
A. Hibiscus rosa-sinensis
B. Ocimum sanctum
C. Helianthus annus
D. Brassica campestris

14. Which one of the following is not a characteristic feature of Fabaceae?
A. Fruit is a berry
B. Sepals five, gamosepalous and imbricate aestivation
C. Stamens ten
D. Ovary superior, monocarpellary and unilocular with many ovules

15. The modified supporting roots called prop roots and stilt roots are seen respectively in
(i) banyan and maize
(ii) banyan and sugarcane
(iii) maize and banyan
(iv) sugarcane and maize
A. (i) only
B. (ii) only
C. (iii) only
D. (i) and (ii) only

16. Which of these plants has pinnately compound leaf at a node?
A. Alstonia
B. Calotropis
C. Guava
D. Neem

17. The mango fruit is a drupe type in which the mesocarp is-
A. astony hard
B. bthin and fleshy
C. fleshy and edible
D. thin and dry

18. Roots play insignificant role in absorption of water in
A. Pea
B. Wheat
C. Sunflower
D. Pistia

19. The wheat grain has an embryo with one large, shield shaped cotyledon known as
A. Scutellum
B. Coleoptiles
C. Epiblast
D. coleorhiza

20. Axile placentation is present in
A. Pea
B. Argemone
C. Dianthus
D. Lemon

21. Flowers are unisexual in
A. China rose
B. Cucumber
C. Pea
D. Onion

22. Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?
A. Four
B. Three
C. Five
D. Six

23. Select the wrong statement-
A. Indigofera is used as a dye
B. Ashwagandha is a medicinal plant
C. Seeds are non-endospermous in Fabaceae
D. Ovary superior, bicarpellary with ovules on axile placentation in Liliaceae.

24. Which of these is an example for a zygomorphic flower with diadelphous stamens and marginal placentation?
A. Pea
B. Lemon
C. Brinjal
D. Cucumber

25. In one plant, underground stems are modified to store food and in another plant, the stem tendrils develop from axillary buds to help plants climb. They are
A. ginger, cucumber
B. carrot, jasmine
C. sweet potato, Bougainvillea
D. opuntia, Eichhornia

26. Consider the following statements.
A. In leguminous plants, leaf base becomes swollen, called pulvinus.
B. The fleshy leaves of onion and garlic store food.
C. The buds in Australian Acacia tree become green and synthesise food.
D. In Alstonia, leaves show alternate phyllotaxy.
A. B and D are correct
B. A and B are correct
C. A and Care correct
D. A and D are correct

27. Monoadelphous conditon of stamens is found in-
A. China rose
B. Pea
C. Citrus
D. None of the above

28. Anthesis is phenomenon which refers to-
A. stigma receptivity
B. bdehiscene of anthers
C. viability of pollen
D. opening of flower bud

29. Leaf tendrils are found in
A. Peas
B. Cucumber
C. Rapevine
D. All of these

30. Syngenesious stamens are found in-
A. Helianthus
B. Cucurbita
C. Hibiscus
D. Calotropis

31. Lodicules are scale like structures found below the ovary in the flower of –
A. Wheat
B. Lily
C. Mustard
D. Sunflower

32. The inflorescence found in banana is –
A. Corymb
B. Spadix
C. Umbel
D. Catkin

33. Edible part of a coconut fruit is
A. Endocarp
B. Endosperm
C. Mesocarp
D. Epicarp

34. Cruciform corolla is characteristic of family
A. Brassicaceae
B. Asteraceae
C. Euphorblaceae
D. Caryophyllaceae

35. Leafy green stems of limited growth modified to perform photosynthesis are called as
A. Phyllode
B. Cladode
C. Phylloclade
D. Foliar stipules

36. Which one of the following is wrong?-
A. Radicle-Roots
B. Plumule-Root cap
C. Fruit can be parthenocarpic
D. Aleurone layer is proteinaceous in nature

37. Assertion (A): Subaerial modifications participate in vegetative reproduction
Reason (R): They store food and water
A. A and R are true and R is correct explanation of A
B. A and R are true but R is not correct explanation of A.
C. A is true, R is false
D. A is false, R is true

38. A taxon belonging to sapindales has a single seeded fleshy fruit with edible mesocarp and stony endocarp. The number of carpels in the flower of this taxon is-
A. 3
B. 5
C. 1
D. 4

39. Identify the correct combination:
A. Neem-Absence of buds in the axils of leaflets-Pinnately compound leaf
B. Sunflower-Opposite phyllotaxy-Inferior Ovary
C. Carrot-Flowers brought to same height due to varied lengths of pedicles-Involucre of bratct
D. Pistia-Discoid stem-Lateral branch with many internodes.

40. The edible part in (a) Groundnut (b) Jack fruit (c) Apple and (d) Mango fruits are
A. a-endosperm, b-inflorescence axis, c-mesocarp, d-endocarp
B. a-cotyledons, b-succulent perianth, d-fleshy thalamus d-mesocarp
C. a-cotyledons, b-endosperm, c-mesocarp, d- fleshy thalamus
D. a-cotyledons, b-fleshy thalamus, c-pericarp, d-mesocarp

41. Three plants (a, b, c) are observed. a has suckers. The edible parts in it are the intlorescence axis and juicy succulent bracts. b belongs to family moraceae. The edible part is succulent pesianth. In C, polyadelphous androecium is present and the edible part is juicy succulent placental hairs of endocarp. identify the types of fruits a, b and c respectively.
A. Sorosis, composite fruit, hesperidium
B. composite fruit, syconus, berry
C. talse fruit, aggregate of berries, hesperidium
D. Aggregate fruit, berry, pepo.

42. 4ldentify the plant with multiocular ovary
A. Cucumber
B. China Rose
C. Cashew
D. Chili

43. An example of edible underground stem is
A. Carrot
B. Groundnut
C. sweet potato
D. potato

44. An aggregate fruit is one which develops from-
A. multicarpellary syncarpous gynoecium
B. multicarpellary apocarpous gynoecium
C. complete inflorescence
D. multicarpellary superior ovary

45. Which one of the following statements is correct?
A. The seed in grasses is not endospermic
B. Mango is a parthenocarpic fruit.
C. A sterile pistil is called a staminode.
D. proteinaceous aleurone layer is present in maize grain

46. Placenta and pericarp are both edible portions in
A. Apple
B. Banana
C. Potato
D. Tomato

47. when the margins of sepals or petals overlap one another without any particular direction, the condition is termed as
A. vexillary
B. twisted
C. bimbricate
D. valvate

48. In apple, the edible portion is-
A. Mesocarp
B. Epicarp
C. Endocarp
D. Thalamus

49. Which of the following are the characteristic features of Solanaceae?
A. Exstipulate leaves
B. Persistent calyx
C. Racemose inflorescence
D. Unilocular ovary
E. Fruits are either berry or capsule of these
A. (A), (C) and (D) are correct
B. (A) only is correct
C. (B) only is correct
D. (A), (B) and (E) are correct

50. Consider the following characters with respect to the gynoecium of Fabaceae and choose the correct statements given below:
(A) Ovary monocarpellary
(B) Many styles
(C) Placenta swollen
(D) Superior ovary
(E) Axile placentation
A. (A), (D) and (E) only
B. (D) and (E) only
C. (A) and (B) only
D. (A) and (D) only