Tag: basics of leaf and flower

Questions Related to basics of leaf and flower

The plant which opens during nights and closes in daytime is 

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

  1. Night queen

  2. Touch-me-not

  3. Vallisneria

  4. Jasmine

Show answer
Correct Option: A
Explanation:

The plant which opens during nights and closes in daytime is night queen. It is called as raat ki rani in India. It is an evergreen woody shrub growing to 4 metres (13 ft) tall. The leaves are simple, narrow lanceolate, 6–20 centimetres (2.4–7.9 in) long and 2–4.5 centimetres (0.79–1.77 in) broad, smooth and glossy, with an entire margin.

The flowers are greenish-white, with a slender tubular corolla 2–2.5 centimetres (0.79–0.98 in) long with five acute lobes, 10–13 millimetres (0.39–0.51 in) diameter when open at night, and are produced in cymose inflorescences. A powerful, sweet perfume is released at night.
The fruit is a berry 10 millimetres (0.39 in) long by 5 millimetres (0.20 in) diameter, the colour of an aubergine. There is also a variety with yellowish flowers.
Night-blooming jasmine blooms when the weather is warm, and its narrow, tubular, greenish-white blossoms only open at night. The flowers produce a strong, sweet fragrance that attracts moths and butterflies. Glossy white berries follow the flowers. It works well as a specimen plant or as a border shrub, or as a fragrant addition to a butterfly garden. 
Touch-me-not is a creeping annual or perennial herb of the pea family.
Vallisneria is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. 
Therefore, the correct answer is option A.

The floral bud is enclosed by which part of the flower?

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

  1. Sepals

  2. Petals

  3. Tepals

  4. Stamen

Show answer
Correct Option: A
Explanation:

Floral bud is the undeveloped or embryonic shoot which is protected by the sepals during bud stage which gets mature and it forms coloured petals that helps flower to attract pollinators.

So the correct option is 'Sepals'.

What are the characteristics associated with the flower?

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

  1. Green leaves

  2. Colourful petals

  3. Green sepals

  4. Both B and C

Show answer
Correct Option: D
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'.

Bell shaped flowers are found in 

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

  1. Maize

  2. Datura

  3. Chrysanthemum

  4. Marigold

Show answer
Correct Option: B
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'.

Flower is the part of the plant which

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

  1. Forms the vegetable

  2. Forms the fruit

  3. Contains the stamens and pistil

  4. All of the above

Show answer
Correct Option: D
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'

The ovary contains the small structures called as 

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

  1. Beads

  2. Ovules

  3. Pollens

  4. Both B and C

Show answer
Correct Option: B
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'

A clove represents a

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

  1. Terminal bud

  2. Accessory bud

  3. Flower bud

  4. Vegetative bud

Show answer
Correct Option: C
Explanation:

Cloves represent the flower bud. They are aromatic.  They are flower buds of a tree Syzygium aromaticum belonging to the family Myrtaceae.

So the correct option is C.

Plants that produce sexually do not produce flower.

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

  1. True

  2. False

Show answer
Correct Option: B
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'.

Sexual reproduction of following plants was discovered by

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

  1. Camerarius

  2. Nawaschin

  3. Strasburger

  4. Maheshwari

Show answer
Correct Option: A
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’.

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

  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

Show answer
Correct Option: C
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'