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Morphology of Flowering Plants · Question 40

NEET 2016 (Phase 1)MCQMedium📈 Topic in 25% papers+4−1
1

Stems modified into flat green organs performing the functions of leaves are known as

  1. phylloclades
  2. scales
  3. cladodes
  4. phyllodes.

Answer

(1) phylloclades

Solution

As per NCERT, some plants of arid regions modify their stems into flattened (e.g. Opuntia) green structures that contain chlorophyll and carry out photosynthesis.

⇒ Such flat, green, leaf-like stems with many internodes are called phylloclades.

∵ Cladodes are phylloclades of only one internode, and phyllodes are flattened petioles (leaf modification), the general term asked is phylloclades.

Answer: (1)

NEET 2016 (Phase 1)

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2

Cotyledon of maize grain is called

  1. coleoptile
  2. scutellum
  3. plumule
  4. coleorhiza.
NEET 2016 (Phase 1)
3

Tricarpellary, syncarpous gynoecium is found in flowers of

  1. Fabaceae
  2. Poaceae
  3. Liliaceae
  4. Solanaceae
NEET 2016 (Phase 1)
4

The standard petal of a papilionaceous corolla is also called

  1. vexillum
  2. corona
  3. carina
  4. pappus.
NEET 2016 (Phase 1)
5

The term 'polyadelphous' is related to

  1. gynoecium
  2. androecium
  3. corolla
  4. calyx.
NEET 2016 (Phase 2)
6

How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?

  1. Three
  2. Four
  3. Five
  4. Six
NEET 2016 (Phase 2)
7

Radial symmetry is found in the flowers of

  1. Brassica
  2. Trifolium
  3. Pisum
  4. Cassia.
NEET 2016 (Phase 2)
8

Free-central placentation is found in

  1. Dianthus
  2. Argemone
  3. Brassica
  4. Citrus.
NEET 2016 (Phase 2)
9

Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?

  1. Three
  2. Four
  3. Five
  4. Six
AIPMT 2015
10

Axile placentation is present in

  1. pea
  2. Argemone
  3. Dianthus
  4. lemon.
AIPMT 2015
11

Roots play insignificant role in absorption of water in

  1. pea
  2. wheat
  3. sunflower
  4. Pistia.
AIPMT 2015

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