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Morphology of Flowering Plants · Question 32

NEET (UG) 2020MCQEasy📈 Topic in 12% papers+4−1
1

The roots that originate from the base of the stem are

  1. Primary roots
  2. Prop roots
  3. Lateral roots
  4. Fibrous roots

Answer

(4) Fibrous roots

Solution

As per NCERT, in monocotyledonous plants the primary root is short lived and is replaced by a large number of roots. These roots originate from the base of the stem and constitute the fibrous root system, as seen in the wheat plant.

Primary roots arise from the radicle and lateral roots arise from the primary root.

Prop roots (e.g., banyan) arise from branches and hang down for support.

Roots originating from the base of the stem are fibrous roots.

Answer: (4)

NEET (UG) 2020

Keep practising — Morphology of Flowering Plants

2

Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is :

  1. Parietal
  2. Free central
  3. Basal
  4. Axile
NEET (UG) 2019
3

Sweet potato is a modified

  1. adventitious root
  2. rhizome
  3. stem
  4. taproot
NEET 2018
4

Pneumatophores occur in

  1. halophytes
  2. free-floating hydrophytes
  3. carnivorous plants
  4. submerged hydrophytes
NEET 2018
5

Coconut fruit is a

  1. berry
  2. nut
  3. capsule
  4. drupe
NEET 2017
6

In Bougainvillea, thorns are the modifications of

  1. adventitious root
  2. stem
  3. leaf
  4. stipules
NEET 2017
7

Root hairs develop from the region of :

  1. Meristematic activity
  2. Root cap
  3. Maturation
  4. Elongation
NEET 2017
8

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
NEET 2016 (Phase 1)
9

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)
10

Cotyledon of maize grain is called

  1. coleoptile
  2. scutellum
  3. plumule
  4. coleorhiza.
NEET 2016 (Phase 1)
11

Tricarpellary, syncarpous gynoecium is found in flowers of

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

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