Question

helobial type and endosperm​

Answer 1

Helobial Type

• In helobial type of endosperm development, the first mitotic division of primary endosperm nucleus is followed by cytokinesis to form two unequal cells.

• They are micropylar chamber and chalazal chamber.

• The nucleus of the micropylr chamber undergoes a number of free nuclear divisions followed by cytokinesis ( wall formation ) to form a multicellular endosperm.

• The nucleus of the chalazal chamber undergoes only few free nuclear divisions followed by cytokinesis to become cellular.

• It is commonly seen in monocots.

Answer 2

Information about Helobial endosperm:-

• This type of endosperm is found in monocots (order helobiales)
• During the development of this type of endosperm first division of primary endosperm occurs.
• Then nucleus is followed by unequal cytokinesis so that two unequal sized cells are formed that means Cell towards the micropyle is large.
• Now free nuclear divisions take place in each cell, results it becomes multinucleated.
• It is intermediate type of endosperm.