Sunflower is not a flower. Explain.
Sunflower is not a flower. Explain.
$\Rightarrow$ Sunflower is not a flower but type of an inflorescence in which receptacle is flat. It possesses many sessile and small flower buds. The smallest bud is in the centre and the oldest is located towards periphery. The group of flower bud is surrounded by a bract and it is called involucre.
Two types of flower buds are seen in sunflower:
$(i)$ Ray Florets : It is arranged on the edge of receptacle that possesses special yellow colour and band like petals. These flower buds are arranged in female sessile and always Zygomorphic, one or more whorls.
$(ii)$ Disc florets : They are located in centre, bisexual and actinomorphic.
Similar Questions
Match the following
Column $- I$
Column $- II$
$(1)$ Mustard
$(A)$ Opposite phyllotaxy
$(2)$ Guava
$(B)$ Pinnately compound leaf
$(3)$ Neem
$(C)$ Alternate phyllotaxy
$(D)$ Palmately compound leaf
Match the following
| Column $- I$ | Column $- II$ |
| $(1)$ Mustard | $(A)$ Opposite phyllotaxy |
| $(2)$ Guava | $(B)$ Pinnately compound leaf |
| $(3)$ Neem | $(C)$ Alternate phyllotaxy |
| $(D)$ Palmately compound leaf |
When the anthers do not possess pollen grains at all, these are known as
When the anthers do not possess pollen grains at all, these are known as
Choose correct pair.
Choose correct pair.
Which of these is an example for zygomorphic flower with imbricate aestivation?
Which of these is an example for zygomorphic flower with imbricate aestivation?
A flower which can be divided into equal vertical halves by more than one plane of division is
A flower which can be divided into equal vertical halves by more than one plane of division is