Question 1

Which of the following are characteristic features of Solanaceae family ? (a) Flowers are bisexual and actinomorphic (b) Calyx have five sepals and are united (c) Androecium have five stamens and are

Accepted Answer

The floral features of the Solanaceae family are as follows: Flowers are typically bisexual and actinomorphic. The calyx consists of five sepals which are united (gamosepalous) and are often persistent. The androecium consists of five stamens which are epipetalous (attached to the petals). The gynoecium consists of a superior ovary, which is bicarpellary and syncarpous with a swollen placenta. Therefore, statements (a), (b), and (c) are correct, while statement (d) is incorrect because the ovary

Question 2

Phyllotaxy is the pattern of arrangement of __________.

Accepted Answer

Phyllotaxy is the pattern of arrangement of leaves on the stem or branch. This is usually of three types: alternate, opposite, and whorled. The arrangement of flowers on the floral axis is termed as inflorescence.

Question 3

In racemose inflorescence, ____________.

Accepted Answer

In racemose inflorescence, the main axis continues to grow indefinitely and does not terminate in a flower. The flowers are borne laterally in an acropetal succession, meaning the older flowers are at the base and the younger flowers or buds are at the apex. In cymose inflorescence, the main axis terminates in a flower, hence its growth is limited, and the flowers are borne in a basipetal order. Answer: flowers are borne in an acropetal succession

Question 4

Match List I with List II : List I (Placentation) List II (Example) A. Marginal I. Mustard B. Axile II. Pea C. Parietal III. Marigold D. Basal IV. Lemon Choose the correct answer from the options give

Accepted Answer

Marginal placentation is found in pea where the placenta forms a ridge along the ventral suture of the ovary. Axile placentation is found in lemon, tomato, and china rose where the placenta is axial and ovules are attached to it in a multilocular ovary. Parietal placentation is found in mustard and argemone where ovules develop on the inner wall of the ovary. Basal placentation is found in marigold and sunflower where the placenta develops at the base of the ovary and a single ovule is attached

Question 5

In angiosperms, root hairs arise from which one of the following regions of the root ?

Accepted Answer

The root is divided into different regions from the apex to the base: the root cap, the region of meristematic activity, the region of elongation, and the region of maturation. The cells of the elongation zone gradually differentiate and mature to form the region of maturation. From the epidermal cells of the region of maturation, very fine and delicate, thread-like structures called root hairs arise. These root hairs significantly increase the surface area for the absorption of water and minera

Question 6

Match List-I with List-II . List-I List-II A. Marginal placentation I. Argemone B. Axile placentation II. Tomato C. Parietal placentation III. Primrose D. Free central placentation IV. Pea Choose the

Accepted Answer

Marginal placentation is found in pea where the placenta forms a ridge along the ventral suture of the ovary. Axile placentation is found in tomato, lemon, and china rose where the placenta is axial and ovules are attached to it in a multilocular ovary. Parietal placentation is found in Argemone and mustard where ovules develop on the inner wall of the ovary or on the peripheral part. Free central placentation is found in Primrose and Dianthus where ovules are borne on the central axis and septa

Question 7

Which of the following floral formula is the correct floral formula of Solanaceae family ?

Accepted Answer

The Solanaceae family exhibits the following floral characteristics: - Symmetry: Actinomorphic, represented by . - Sexuality: Bisexual. - Calyx: 5 sepals that are united (gamosepalous), represented by K _ (5) . - Corolla: 5 petals that are united (gamopetalous), represented by C _ (5) . - Androecium: 5 stamens that are epipetalous (attached to the petals). This is represented by an arc connecting the corolla and androecium symbols: C _ (5) A _ 5 . - Gynoecium: Bicarpellary, syncarpous, with a su

Question 8

Given below are two statements: Statement I: In a floral formula stands for zygomorphic nature of the flower, and G stands for inferior ovary. Statement II: In a floral formula stands for actinomorphi

Accepted Answer

The floral formula symbol is used for actinomorphic flower, while \% is used for zygomorphic flower. The symbol G represents gynoecium and G symbol represent superior ovary, while inferior ovary is represented by G . Thus, statement I is incorrect and Statement II is correct.

Question 9

In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called :

Accepted Answer

In monocot seeds, the outer covering of endosperm separates the embryo by a proteinous layer called aleurone layer.

Question 10

Match List I with List II : array |l|l|l|l| & List - I & & List - II \ A . & Scutellum & (i) & Persistent nucellus \ B. & Non-albuminous seed & (ii) & Cotyledon of Monocot seed \ C. & Epiblast & (i

Accepted Answer

Scutellum is cotyledon of monocot seed. Groundnut seed is non-albuminous seed. Epiblast is rudimentary cotyledon in monocot seed. Perisperm is persistent nucellus.

Question 11

Which of the following is an example of a zygomorphic flower?

Accepted Answer

Zygomorphic flowers can be divided into two equal halves by only a single vertical plane and shows bilateral symmetry. Pea possess zygomorphic flowers. Chilli, Petunia and Datura possess actinomorphic flowers.

Question 12

Match List-I with List-II : array llll & List-I & & List-II \ . & Vexillary aestivation & I.&Brinjal \ . & Epipetalous stamens & II. & Peach \ . & Epiphyllous stamens & III. & Pea \ . & Perigynous flo

Accepted Answer

In pea, vexillary aestivation is found. Perigynous flowers are observed in peach. Epiphyllous stamens are found in lily. Epipetalous stamens are found in brinjal.

Question 13

Which of the following examples show monocarpellary, unilocular ovary with many ovules? A. Sesbania B. Brinjal C. Indigofera D. Tobacco E. Asparagus Choose the correct answer from the options given be

Accepted Answer

Monocarpellary, unilocular ovary with many ovules is the characteristic feature of the members of the family Fabaceae. Sesbania and Indigofera are the members of this family. Brinjal and tobacco belong to the family Solanaceae whereas Asparagus belongs to the family Liliaceae.

Question 14

The part marked as ' x ' in the given figure is

Accepted Answer

The given figure is of the false fruit, strawberry and ' x ' represents the thalamus.

Question 15

Identify the type of flowers based on the position of calyx, corolla and androecium with respect to the ovary from the given figures (a) and (b)

Accepted Answer

If gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level, it is called perigynous. Both diagram shows perigynous condition.

Question 16

Which of the following is an example of actinomorphic flower?

Accepted Answer

Datura shows actinomorphic flower. In Cassia, Pisum and Sesbania, zygomorphic flowers are seen.

Question 17

Identify the part of the seed from the given figure which is destined to form root when the seed germinates.

Accepted Answer

Radicle is destined to form root. In the given diagram ' C ' represent radicle

Question 18

Match List I with List II Choose the correct answer from the options given below:

Accepted Answer

In China rose monoadelphous androecium is present. Diadelphous androecium is found in pea plant. Polyadelphous androecium is found in citrus. Epiphyllous androecium is found in lily.

Question 19

Match List I with List II Choose the correct answer from the options given below :

Accepted Answer

Rose have half-inferior ovary, thus it is known as Perigynous flower. In Pea, the placenta form a ridge along the ventral suture of the ovary and ovules are borne on this ridge forming two rows. In Cotton, twisted aestivation is present. In Mango, fruit is drupe.

Question 20

Match List-I with List-II : array llll & List-I & & List-II \ . & China rose & I. & Free central \ . & Mustard & II. & Basal \ . & Primrose & III. & Axile \ . & Marigold & IV. & Parietal array Choose

Accepted Answer

China rose exhibits axile placentation. Mustard exhibits parietal placentation. Primrose exhibits free central placentation. Marigold exhibits basal placentation.

Morphology of Flowering Plants — Previous Year Questions & Solutions