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Morphology of Flowering Plants · Question 39

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

Which of the following is not a stem modification?

  1. Tendrils of cucumber
  2. Flattened structures of Opuntia
  3. Pitcher of Nepenthes
  4. Thorns of Citrus

Answer

(3) Pitcher of Nepenthes

Solution

As per NCERT, stem tendrils (cucumber, pumpkin, grapevine), stem thorns ( Citrus, Bougainvillea) and flattened green stems ( Opuntia) are modifications of the stem.

⇒ In insectivorous plants like pitcher plant ( Nepenthes), the leaves are modified into pitchers.

∴ Pitcher of Nepenthes is a leaf modification, not a stem modification.

Answer: (3)

NEET 2016 (Phase 1)

Keep practising — Morphology of Flowering Plants

2

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

  1. phylloclades
  2. scales
  3. cladodes
  4. phyllodes.
NEET 2016 (Phase 1)
3

Cotyledon of maize grain is called

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

Tricarpellary, syncarpous gynoecium is found in flowers of

  1. Fabaceae
  2. Poaceae
  3. Liliaceae
  4. Solanaceae
NEET 2016 (Phase 1)
5

The standard petal of a papilionaceous corolla is also called

  1. vexillum
  2. corona
  3. carina
  4. pappus.
NEET 2016 (Phase 1)
6

The term 'polyadelphous' is related to

  1. gynoecium
  2. androecium
  3. corolla
  4. calyx.
NEET 2016 (Phase 2)
7

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)
8

Radial symmetry is found in the flowers of

  1. Brassica
  2. Trifolium
  3. Pisum
  4. Cassia.
NEET 2016 (Phase 2)
9

Free-central placentation is found in

  1. Dianthus
  2. Argemone
  3. Brassica
  4. Citrus.
NEET 2016 (Phase 2)
10

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
11

Axile placentation is present in

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

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