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Plant Kingdom · Question 37

NEET 2016 (Phase 2)MCQEasy📈 Topic in 62% papers+4−1
1

Conifers are adapted to tolerate extreme environmental conditions because of

  1. broad hardy leaves
  2. superficial stomata
  3. thick cuticle
  4. presence of vessels.

Answer

(3) thick cuticle

Solution

As per NCERT, the leaves in gymnosperms are well adapted to withstand extremes of temperature, humidity and wind.

⇒ In conifers, the needle-like leaves reduce the surface area, and their thick cuticle and sunken stomata help to reduce water loss.

∵ Conifer leaves are needle-like (not broad), stomata are sunken (not superficial) and gymnosperms lack vessels,

∴ the adaptation is the thick cuticle.

Answer: (3)

NEET 2016 (Phase 2)

Keep practising — Plant Kingdom

2

Which one of the following statements is wrong?

  1. Algae increase the level of dissolved oxygen in the immediate environment.
  2. Algin is obtained from red algae, and carrageenan from brown algae.
  3. Agar-agar is obtained from Gelidium and Gracilaria.
  4. Laminaria and Sargassum are used as food.
NEET 2016 (Phase 2)
3

Which one of the following statements is wrong?

  1. Chlorella and Spirulina are used as space food.
  2. Mannitol is stored food in Rhodophyceae.
  3. Algin and carrageenan are products of algae.
  4. Agar-agar is obtained from Gelidium and Gracilaria.
AIPMT 2015 (Cancelled)
4

In which of the following, gametophyte is not independent free living?

  1. Pteris
  2. Pinus
  3. Funaria
  4. Marchantia
AIPMT 2015 (Cancelled)
5

Read the following five statements (A to E) and select the option with all correct statements.

  1. A, D and E
  2. B, C and E
  3. A, C and D
  4. B, C and D
AIPMT 2015 (Cancelled)
6

Male gametes are flagellated in

  1. Ectocarpus
  2. Spirogyra
  3. Polysiphonia
  4. Anabaena.
AIPMT 2015 (Cancelled)
7

Which one of the following is wrong about Chara?

  1. Upper oogonium and lower round antheridium
  2. Globule and nucule present on the same plant
  3. Upper antheridium and lower oogonium
  4. Globule is male reproductive structure
AIPMT 2014
8

Which of the following is responsible for peat formation?

  1. Marchantia
  2. Riccia
  3. Funaria
  4. Sphagnum
AIPMT 2014
9

Male gametophyte with least number of cells is present in

  1. Pteris
  2. Funaria
  3. Lilium
  4. Pinus.
AIPMT 2014
10

Which one of the following shows isogamy with non-flagellated gametes?

  1. Sargassum
  2. Ectocarpus
  3. Ulothrix
  4. Spirogyra
AIPMT 2014
11

An alga which can be employed as food for human being is :

  1. Polysiphonia
  2. Chlorella
  3. Ulothrix
  4. Spirogyra
AIPMT 2014

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
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