Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Strobilanthes kunthiana flowers once in

  1. $5\ years$
  2. $12\ years$
  3. $20\ years$
  4. $50\ years$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Strobilanthes kunthiana (Neelakurinji) flower once in $12\ years$, its juvenile phase is very long. The last time this plant flowered during September-October $2006$. It is found in hilly area of Kerala, Karnataka and Tamil Nadu and attracts a large number of tourists due to mass flowering.

So, the correct answer is '12 years'.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Strobilanthes kunthiana differs from bamboo in

  1. Being monocarpic

  2. Length of juvenile phase

  3. Being polycarpic

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bamboo can be monocarpic or polycarpic whereas Strobilanthes kunthiana is a monocarpic plant. The juvenile phase of bamboo can vary from 3-120 years and the juvenile phase of Strobilanthes kunthiana can vary from 8-16 years.

So, the correct option is 'Length of juvenile phase'. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Select the mismatched pair.

  1. Smallest angiosperm - Rafflesia

  2. Tallest angiosperm - Eucalyptus regnans

  3. Marine angiosperms - Zostera, Thalassia

  4. Angiosperm with smallest seed - Orchid

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Smallest angiosperm is Wolffia microscopici, while Rafflesia arnoldii is the parasitic plant with the world's largest flower.

So the correct option is A.

Multiple choice biology classification of plants phanerogams gymnosperms angiosperms

Mature gymnosperms lack

  1. Seeds

  2. Leaves

  3. Flowers

  4. Vascular tissue

  5. Woody growth
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gymnosperms are seed-bearing plants but lack the specialized features  of flowering plants. The gymnosperms do not bear flowers hence the seeds are naked i.e these are not enclosed within fruits.

Multiple choice biology classification of plants phanerogams gymnosperms angiosperms

Which of the following pairs produces spores and seeds respectively?

  1. Monocot and dicot

  2. Algae and fungi

  3. Mosses and ferns

  4. Ferns and gymnosperms

  5. Gymnosperms and angiosperms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ferns reproduce via spores, while gymnosperms are seed-bearing plants that do not produce flowers.

Multiple choice biology classification of plants phanerogams gymnosperms angiosperms

Which of the following is not a characteristic of gymnosperms?

  1. Seed plants

  2. Predominantly diploid

  3. to flower

  4. Conifers

  5. Naked seed plants
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gymnosperms are 'naked seed' plants and do not produce flowers; flowers are a defining characteristic of angiosperms.

Multiple choice biology classification of plants phanerogams gymnosperms angiosperms

Which group of plants bear flowers?

  1. Pteridophytes

  2. Angiosperms

  3. Gymnosperms

  4. Bryophytes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Angiosperms or flowering plants include all those plants in which seeds are enclosed in the fruits. An ovule is well developed in angiosperms. Thus option B is the correct answer.