Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology flower and fruit flower: parts of a flower flower and pollination flower to flower

In Hibiscus rosa-sinensis there is an additional floral whorl known as

  1. Calyx

  2. Involucre

  3. Epicalyx

  4. Obdiplostemonous layer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The epicalyx is the additional whorl made up of involucre that is places exterior to the whorl of the calyx. It is found in Hibiscus rosa-sinensis.

A. Calyx is the whorl made up of sepals. It is generally present in complete, perfect and imperfect flowers.
B. Involucres are the units of epicalyx.
C. Epicalyx is the additional whorl present exterior to the calyx.
D. An obdiplostemonous layer is the layer of stamens with the outer layer of stamens opposite to the petals.
Hence, the correct answer is 'Epicalyx'

Multiple choice biology flower and fruit flower: parts of a flower flower and pollination flower to flower

Epicalyx occurs in

  1. Cycas

  2. Jowar

  3. Nephrolepis

  4. China Rose
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The flowers belonging to the family Malvaceae have a number of bracteoles that can vary from three bracteoles to many bracteoles. These bracteoles form a whorl of epicalyx below the calyx. So, epicalyx becomes the outermost accessory whorl. It can be seen in China Rose. 

So, the correct answer is 'China Rose'

Multiple choice biology flower and fruit flower: parts of a flower flower and pollination flower to flower

The condition of free petals is called _________.

  1. Polypetalous

  2. Gamopetalous

  3. Polyphyllous

  4. Gamophyllous

  5. Apocarpous
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When the petals of the corolla are not fused and are free, the condition is called polypetalous. 

A. The condition of free petals is called polypetalous.
B. The condition of fused petals is called gamopetalous.
C. The condition of fused tepals is called polyphyllous.
D. The condition of free tepals is called gamophyllous.
E. The condition of free carpels is called apocarpous.
Hence, the correct answer is 'Polypetalous'

Multiple choice biology flower and fruit flower: parts of a flower flower and pollination flower to flower

In Solanum nigrum, the gamopetalous corolla is

  1. Rotate

  2. Tubular

  3. Campanulate

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

Solanum nigrum belongs to the family Solanaceae. It has fused petals called gamopetalous conditon. The Corolla looks wheel-shaped and is called rotate.

A. Rotate corolla is seen in Solanum nigrum.
B. Tubular corolla is seen in the disc florets of sunflower.
C. Campanulate corolla is seen in Campanula.
D. Globose corolla is seen in rose.
Hence, the correct answer is 'Rotate'

Multiple choice biology flower and fruit flower: parts of a flower flower and pollination flower to flower

Funnel-shaped corolla is called

  1. Campanulate

  2. Urecolate

  3. Rotate

  4. Infundibulum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The corolla can have different shapes when the petals show fusion or the gamopetalous condition. The funnel-shaped corolla is called infundibulum.

A. Bell-shaped corolla is called campanulate, e.g., Campanula.
B. Urn-shaped corolla is called urecolate, e.g., Bryophyllum.
C. Wheel-shaped corolla is called rotate, e.g., Calotropis.
D. Funnel-shaped corolla is called infundibulum, e.g., Petunia.
Hence, the correct answer is 'Infundibulum'.

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 reproductive part of a plant is:

  1. Leaf

  2. Stem

  3. Root

  4. Flower
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Flower is the reproductive part of the plant. Pistil, stamens, petals and sepals are the four main parts of the flower. Among this, pistil is the female reproductive part and it is made up of stigma, style and ovary. Stamen is the male reproductive part and it consists of filament and anther. 

So, the correct answer is 'Flower'.

Multiple choice biology the living world of plants parts of flower and its functions flower to flower parts of a flower

In Clerodendron _________ flower opens first.

  1. Peripheral

  2. Younger

  3. Terminal

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

Clerodendron shows cymose inflorescence so younger flowers are present at the base of the inflorescence, while older flowers are present at the top. Such an arrangement is called basipetal succession. The peripheral flowers open first.

So, the correct option is 'Peripheral'.