Tag: growth and development in plants

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Questions Related to growth and development in plants

Multiple choice biology flower to flower parts of flower and its functions parts of a flower basics of leaf and flower growth and development in plants

What are the characteristics associated with the flower?

  1. Green leaves

  2. Colourful petals

  3. Green sepals

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation


  1. Calyx which is considered as the outermost whorl and its unit is known as sepals and are green in colour helps in protection of bud of a flower.
  2. Corolla is the second nonessential unit and is composed of petals and are coloured which helps to attract pollinators.

So, the correct option is 'Both B and C'.

Multiple choice biology flower to flower parts of flower and its functions parts of a flower basics of leaf and flower growth and development in plants

Bell shaped flowers are found in 

  1. Maize

  2. Datura

  3. Chrysanthemum

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

  1. Maize has an inflorescence of spikelets as flowers are born on an axis called rachilla surrounded by bracts.
  2. Datura flower is bell-shaped and a solitary flower.
  3. Chrysanthemum often shows solitary head inflorescence.
  4. Marigold has spike inflorescence means with short or no pedicel are elongated and unbranched peduncle.
So, the correct option is 'Datura'.

Multiple choice biology flower to flower parts of flower and its functions parts of a flower basics of leaf and flower growth and development in plants

Flower is the part of the plant which

  1. Forms the vegetable

  2. Forms the fruit

  3. Contains the stamens and pistil

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The flower is considered as the modified shoot that is meant for reproduction and contains the reproductive organs stamen (male reproductive part) and pistil (female reproductive part) and after fertilization, its parts convert into fruits and vegetables as a result of reproduction.

So, the correct option is 'All of the above'

Multiple choice biology flower to flower parts of flower and its functions parts of a flower basics of leaf and flower growth and development in plants

The ovary contains the small structures called as 

  1. Beads

  2. Ovules

  3. Pollens

  4. Both B and C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carpels, pistil or gynoecium are the female reproductive part of the flower that consists of a stigma that holds the pollen grains, the style that leads the path of pollen tube and ovary produce small structures called ovules or ovum (female gamete).

So the correct option is 'Ovule'

Multiple choice biology flower to flower parts of flower and its functions parts of a flower basics of leaf and flower growth and development in plants

Plants that produce sexually do not produce flower.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The flower is formed to begin the process of reproduction. The female parts will create an ovule, or unfertilized egg. The egg (or eggs) will remain in the ovary and wait to be fertilized. The male parts (in particular, the anther) will produce pollen, which contains the sperm needed to fertilize the egg.

So, the correct answer is 'False'.
Multiple choice biology flower to flower parts of flower and its functions parts of a flower basics of leaf and flower growth and development in plants

Sexual reproduction of following plants was discovered by

  1. Camerarius

  2. Nawaschin

  3. Strasburger

  4. Maheshwari
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A.Camerarius – He first discovered sexual reproduction in plants.

B.Nawaschin – He first discovered triple fusion and double fertilization in angiosperms.

C.Strasburger – He first discovered syngamy and monosporic embryo sac in angiosperms.

D.Maheswari – He first discovered the lab to land habit in plants.

So, the correct option is ‘Camerarius’.

Multiple choice biology flower to flower parts of flower and its functions parts of a flower basics of leaf and flower growth and development in plants

VERY SHORT ANSWER TYPE
Match the parts in Column A with the flowers or parts of flower in Column B.

Column A Column B
(a)  Polyadelphous (i)   Polypetalous
(b)  Pollen grains (ii)   Calyx, corolla
(c)  Free petals (iii)   Nectar
(d)  Non-essential (iv)   Bombax
(e)  Sweet fragrant fluid (v)   Pollen sac

  1. a-v, b-iv, c-iii, d-ii, e-i

  2. a-i, b-ii, c-iii, d-iv, e-v

  3. a-iv, b-v, c-i, d-ii, e - iii

  4. a-ii, b-v, c-i, d-iv, e-iii
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Free petals - Polypetalous 

Polyadelphous - Bombax
 Pollen grains - Pollen sac
Non-essential - Calyx, corolla
Sweet fragrant fluid - Nectar
So, the correct answer is 'a-iv, b-v, c-i, d-ii, e - iii'

Multiple choice biology the flower structure of a bisexual flower growth and development in plants basics of leaf and flower

Which plants bear petaloid bracts?

  1. Bougainvillea

  2. Cassia fistula

  3. Mimosa pudica

  4. Ricinus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Petaloid bracts are present in Bougainvillea. Petaloids are structures resembling petals but actually they are not. The actual flower of the plant is small and generally white, but each cluster of three flowers is surrounded by three or six bracts with the bright colours associated with the plant, including pink, magenta, purple, red, orange, white or yellow.  A bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis, or cone scale. Bracts are often (but not always) different from foliage leaves. They may be smaller, larger or of a different color, shape, or texture. Typically, they also look different from the parts of the flower, such as the petals or sepals.

Therefore, the correct answer is option A.

Multiple choice biology the flower structure of a bisexual flower growth and development in plants basics of leaf and flower

Plant honey is secreted by

  1. Digestive glands

  2. Nectaries

  3. Oil ducts

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

Plant honey is secreted by nectaries. Nectar is a sugar-rich liquid produced by plants in glands called as nectaries, either within the flowers with which it attracts pollinating animals or by extrafloral nectaries, which provide a nutrient source to animal mutualists, which in turn provide antiherbivore protection. Common nectar-consuming pollinators include bees, butterflies and moths, hummingbirds, and bats.
Therefore, the correct answer is option B.