Botany XII+ - Sexual Reproduction in Flowering Plants 11

Question : 1

Which of the following is an adaptation to provide assured nutrition to the developing embryo?
 

Options:

	Division of PEC only after certain amount of embryo is formed
	Division of zygote only after the completion of endosperm development
	Division of PEC only after the completion of embryo development
	Division of zygote only after certain amount of endosperm is formed

Solution :

(D)

Endosperm development precedes
embryo development

You scored 0 of 1

Question : 2

(skipped)

Coconut water from tender coconut is
 

Options:

	Double endosperm
	Free nuclear endosperm
	Diploid endosperm
	Cellular endosperm

Solution :

(B)

In coconut, the surrounding white kernel
is the cellular endosperm

You scored 0 of 1

Question : 3

(skipped)

Given below is a diagram of a typical dicot embryo. In which of the following all the three parts labelled as A, B & C are correctly identified?

                       

Options:

	(A)   Radicle,    (B) Epicotyl,      (C)   Root cap
	(A)   Plumule,   (B)   Hypocotyl,   (C)   Radicle
	(A)   Radicle,    (B) Hypocotyl,    (C)   Plumule
	(A)   Root cap,   (B)   Epicotyl,    (C)   Plumule

Solution :

(c)

The cylindrical portion below the levels of
cotyledons is hypocotyl.

You scored 0 of 1

Question : 4

(skipped)

In the most common type of endosperm development in flowering plants
 

Options:

	Each nuclear division is followed by wall formation
	PEN undergoes successive nuclear divisions
	Cytokinesis is followed by karyokinesis
	PEN undergoes successive meiotic divisions

Solution :

(B)

• Most common → Nuclear type
• PEN (3n)

You scored 0 of 1

Question : 5

(skipped)

Cells of which of the following tissue are filled with reserve food materials and used for the nutrition of the developing embryo?
 

Options:

	Nucellus
	Tapetum
	Embryo sac
	Endosperm

Solution :

(D)

Tapetum is a nutritive tissue found in
anther

You scored 0 of 1

Question : 6

(skipped)

During dicot embryogeny, the zygote gives rise to the proembryo and subsequently to the
 

Options:

	Heart shaped, globular and mature embryo
	Globular, heart shaped and octant embryo
	Heart shaped, octant and globular embryo
	Globular, heart shaped and mature embryo

Solution :

(D)

Zygote → Octant stage → Globular
stage → Heart shaped embryo →
Mature embryo.

You scored 0 of 1

Question : 7

(skipped)

Mark the incorrect match (w.r.t. chemical nature of endosperm)
 

Options:

	Phoenix dactylifera   –   Oily
	Wheat                    –   Starchy
	Ivory palm               –   Cellulosic
	Maize                     –   Proteinaceous

Solution :

(A)

Date palm/Phoenix dactylifera →
Hemicellulosic endosperm.

You scored 0 of 1

Question : 8

(skipped)

Which of the following components make the mature embryo of castor plant?
 

Options:

	Two embryonal axis and two cotyledons
	An embryonal axis and one cotyledon
	Two cotyledons and an embryonal axis
	Cotyledons, embryonic axis and coleoptile

Solution :

(C)

Castor is a dicot plant.

You scored 0 of 1

Question : 9

(skipped)

Which of the following pair is incorrectly matched?
 

Options:

	Ruminate endosperm   –   Passiflora
	Mosaic endosperm       –   Maize
	Oily endosperm            –   Coconut
	Triploid endosperm        –   Oenothera

Solution :

(D)

Oenothera – Diploid endosperm

You scored 0 of 1

Question : 10

(skipped)

Development of embryo in Capsella bursa-pastoris is
 

Options:

	Holoblastic and Exoscopic
	Endoscopic and Meroblastic
	Meroblastic and Exoscopic
	Holoblastic and Endoscopic

Solution :

(B)

In angiosperms the embryogeny is
endoscopic and meroblastic