Morphology of Flowering Plants PYQs Set 1 (PDF)

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Mere Teacher · Previous Year Questions NEET Biology · Morphology of Flowering Plants · Set 1 (Q1-30)
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1. $Which one of the following plants shows vexillary aestivation and diadelphous stamens?$ (1) $Solanum nigrum$ (2) $Colchicum autumnale$ (3) $Pisum sativum$ (4) $Allium cepa$ 2. $Identify the correct features of Mango and Coconut fruits. A. In both fruit is a drupeB. Endocarp is edible in bothC. Mesocarp in Coconut is fibrous, and in Mango it is fleshyD. In both, fruit develops from monocarpellary ovarySelect the correct option from below:$ (1) $(A), (B) and (C) only$ (2) $(A) and (D) only$ (3) $(A) and (B) only$ (4) $(A), (C) and (D) only$ 3. $The flowers are Zygomorphic in: A. Mustard B. Gulmohar C. Cassia D. Datura E. Chilli Choose the correct answer from the options given below.$ (1) $C, D and E only$ (2) $A, B and C only$ (3) $B and C only$ (4) $D and E only$ 4. $Given below are two statements: One is labelled as Assertion A and the other is labeled as Reason R: Assertion (A): A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem. Reason (R): Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves.In the light of the above statements, choose the correct answer from the options given below:$ (1) $A is false but R is true.$ (2) $Both A and R are true and R is the correct explanation of A .$ (3) $Both A and R are true but R is NOT the correct explanation of A .$ (4) $A is true but R is false.$ 5. $The roots that originate from the base of the stem are:$ (1) $Primary roots$ (2) $Prop roots$ (3) $Lateral roots$ (4) $Fibrous roots$ 6. $Correct position of floral parts over thalamus in mustard plant is-$ (1) $Margin of the thalamus grows upward, enclosing the ovary completely, and other parts arise below the ovary$ (2) $Gynoecium is present in the centre and other parts cover it partially$ (3) $Gynoecium is situated in the centre, and other parts of the flower are located at the rim of the thalamus, at the same level$ (4) $Gynoecium occupies the highest position, while the other parts are situated below it$ 7. $Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specific to family Fabaceae but not found in Solanaceae or Liliaceae.$ (1) $Epiphyllous and Dithecous anthers$ (2) $Diadelphous and Dithecous anthers$ (3) $Polyadelphous and epipetalous stamens$ (4) $Monoadelphous and Monothecous anthers$ 8. $Which of the following is the correct floral formula of Liliaceae?$ (1) $\oplus ♂ ♀ K_{(5)} C_{(5)} A_{5} G_{(2)}$ (2) $Br \oplus ♀ ♂ P_{(3 + 3)} A_{3 + 3} G_{(3)}$ (3) $\oplus ♀ ♂ K_{(5)} C_{(5)} A_{5} G_{(2)}$ (4) $% ♀ ♂ C_{1 + 2 + (2)} A_{(9) + 1} G_{(1)}$ 9. $Diadelphous stamens are found in:$ (1) $Citrus$ (2) $Pea$ (3) $China rose and citrus$ (4) $China rose$ 10. $Ray florets have:$ (1) $Superior ovary$ (2) $Hypogynous ovary$ (3) $Half inferior ovary$ (4) $Inferior ovary$ 11. $The ovary is half inferior in:$ (1) $Mustard$ (2) $Sunflower$ (3) $Plum$ (4) $Brinjal$ 12. $Identify the correct set of statements: A. The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea B. Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin C. Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves D. Rhizophora shows vertically upward growing roots that help to get oxygen for respiration E. Subaerially growing stems in grasses and strawberry help in vegetative propagation Choose the correct answer from the options given below.$ (1) $A, B, D and E only$ (2) $B and C only$ (3) $A and D only$ (4) $B, C, D and E only$ 13. $Axile placentation is observed in$ (1) $China rose Petunin and Lemon$ (2) $Mustard, Cucumber and Primrose$ (3) $China rose, Beans and Lupin$ (4) $Tomato, Dianthus and Pea$ 14. $Which one of the following is a xerophytic plant in which the stem is modified into the flat green and succulent structure?$ (1) $Opuntia$ (2) $Casuarina$ (3) $Hydrilla$ (4) $Acacia$ 15. $In unilocular ovary with a single ovule, the placentation is$ (1) $Marginal$ (2) $Basal$ (3) $Free central$ (4) $Axile$ 16. $Ovary is half-inferior in the flowers of$ (1) $Guava$ (2) $Plum$ (3) $Brinjal$ (4) $Cucumber$ 17. $The wheat grain has an embryo with one large, shield-shaped cotyledon known as$ (1) $Coleorhiza$ (2) $Scutellum$ (3) $Coleoptile$ (4) $Epiblast$ 18. $Which one of the following statements is correct?$ (1) $The seed in grasses is not endospermic.$ (2) $Mango is a parthenocarpic fruit.$ (3) $A proteinaceous aleurone layer is present in maize grain.$ (4) $A sterile pistil is called a staminode.$ 19. $An aggregate fruit is one which develops from$ (1) $Multicarpellary syncarpous gynoecium$ (2) $Multicarpellary apocarpous gynoecium$ (3) $Complete inflorescence$ (4) $Multicarpellary superior ovary$ 20. $Which one of the following statements is correct?$ (1) $Seeds of orchids have oil-rich endosperm.$ (2) $Placentation in primrose is basal.$ (3) $Flower of tulip is a modified shoot.$ (4) $In tomato, the fruit is a capsule$ 21. $How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, Mustard, Groundnut, radish, gram and turnip have stamen with different lengths in their flowers?$ (1) $Four$ (2) $Five$ (3) $Six$ (4) $Three$ 22. $How many plants in the list given below have marginal placentation? Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin$ (1) $Five$ (2) $Six$ (3) $Three$ (4) $Four$ 23. $Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip, how many plants have hypogynous flower?$ (1) $Six$ (2) $Ten$ (3) $Fifteen$ (4) $Eighteen$ 24. $Placenta and pericarp are both edible portions in$ (1) $Apple$ (2) $Banana$ (3) $Tomato$ (4) $Potato$ 25. $The technical term used for the androecium in a flower of China rose (Hibiscus rosasinensis)is$ (1) $Monadelphous$ (2) $Diadelphous$ (3) $Polyandrous$ (4) $Polyadelphous$ 26. $An example of edible underground stem is$ (1) $Carrot$ (2) $Groundnut$ (3) $Sweet potato$ (4) $Potato$ 27. $Keel is the characteristic feature flower of$ (1) $Tulip$ (2) $Indigofera$ (3) $Aloe$ (4) $Tomato$ 28. $Whorled, simple leaves with reticulate venation are present in$ (1) $Calotropis$ (2) $Neem$ (3) $China rose$ (4) $Alstonia$ 29. $Which one of the following organisms is correctly matched with its three characteristics?$ (1) $Tomato: Twisted aestivation, Axile placentation, Berry$ (2) $Onion: Bulb, Imbricate aestivation, Axile placentation$ (3) $Maize: C3 pathway, Closed vascular bundles, Scutellum$ (4) $Pea: C3 pathway, Endospermic seed, vaxillary aestivation$ 30. $The ovary is half inferior in flowers of$ (1) $Cucumber$ (2) $Cotton$ (3) $Guava$ (4) $Peach$