Tag: pictorial feature of plant kingdom

Questions Related to pictorial feature of plant kingdom

Pick out wrong statement :

gymnosperms pictorial feature of plant kingdom biology

  1. Double fertilization is unique to gymnosperms and monocotyledons

  2. Sequoia, a gymnosperm, is one of the tallest tree.

  3. Phaeophyceae members possess chlorophyll a, c, carotenoids and xanthophylls

  4. Moss is a gametophyte which consists of two stages namely, protonema stage and leafy stage

  5. Evolutionarily, pteridophytes are the first terrestrial plants to possess xylem and phloem.

Show answer
Correct Option: A
Explanation:
Sequoia, a gymnosperm, is one of the tallest trees. 
Phaeophyceae members possess chlorophyll a, c carotenoids and xanthophylls.
Moss is a gametophyte which consists of two stages namely, protonema stage and leafy stage.
Double fertilisation is absent in  gymnosperms. It occurs both in monocotyledons and dicotyledons.
So, the correct option is  'Double fertilization is unique to gymnosperms and monocotyledons.'

Submerged hydrophytes have commonly dissected leaves for

gymnosperms pictorial feature of plant kingdom biology

  1. Decreasing surface area

  2. Increasing surface area

  3. Reducing effects of water currents

  4. Increasing number of stomata

Show answer
Correct Option: C
Explanation:

Plants with both submerged and floating or emerged leaves show heterophylly (Ranunculus), that is, occurrence of more than one type of leaves or dissected leaves (Hydrilla).This prevents the tearing of the leaves that are constantly exposed to water currents.

So, the correct answer is 'Reducing effects of water currents'

Sporangia of conifers are located in/on

gymnosperms pictorial feature of plant kingdom biology

  1. Axils of leaves

  2. Axils of branches

  3. Dwarf shoots

  4. Scales of the cones

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Correct Option: D

Which one is a living fossil?

gymnosperms pictorial feature of plant kingdom biology

  1. Pinus

  2. Gnetum

  3. Ginkgo

  4. Riccia

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Correct Option: C

Which one of the following has not changed for the last several thousand years?

gymnosperms pictorial feature of plant kingdom biology

  1. Dryopteris

  2. Gnetum

  3. Ginkgo

  4. Palms

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Correct Option: C

Which is intermediate between conifers and cycads?

gymnosperms pictorial feature of plant kingdom biology

  1. Tsuga

  2. Ephedra

  3. Ginkgo

  4. Cupressus

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Correct Option: C

Maiden Hair Tree is

gymnosperms pictorial feature of plant kingdom biology

  1. Araucaria

  2. Thuja

  3. Ginkgo

  4. Pinus

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Correct Option: C
Explanation:

In pleurocarpous condition the sex organs are borne on short lateral branches.

So the correct option is C.

Conifers are found in

gymnosperms pictorial feature of plant kingdom biology

  1. Western Ghats

  2. Eastern Ghats

  3. Rajasthan

  4. Himalayas

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Correct Option: D

The scientific name of Pacific Yew is

gymnosperms pictorial feature of plant kingdom biology

  1. Acacia samana

  2. Taxus samana

  3. Paradisiaca brevifolia

  4. Taxus brevifolia

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Correct Option: D

Gnetum, a gymnosperm differs from Cycas and Pinus but shows affinities with angiosperms in the features

gymnosperms pictorial feature of plant kingdom biology

  1. Perianth and two integuments

  2. Embryo development and apical meristem

  3. Absence of resin ducts and leaf venation

  4. Presence of vessel elements and absence of archegonia

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Correct Option: D