15553.Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip how many plants have hypogynous flower?
Six
Ten
Fifteen
Eighteen
15554.A corm is
A swollen rot
A compressed, swollen, vertical underground stem
Swollen horizontal underground stem
The swollen end of an underground stem
15555.Scutellum in a caryopsis represents
The place where the seed is attached to raphe
A sheath that protects the radicle
Outermost layer of endosperm
A cotyledon
15556.The family containing mustard, and its main characters are:
Brassicaceae – Tetramerous flowers, six stamens, bicarpellary gynoecium, siliqua type fruit.
Brassicaceae – Pentamerous flowers, many stamens, pentacarpellary gynoecium, capsule type fruit.
Solanaceae – Pentamerous flowers, five stamens, bicarpellary gynoecium, berry type fruit.
Poaceae – Trimerous flowers, three stamens, monocarpellary gynoecium, caryopsis type fruit.
15558.The monocotyledonous seed consists of one large and shield shaped cotyledon known as
Coleoptile
Scutellum
Aleurone layer
Coleorhiza
15559.Which of the following is true?
Tracheids are unicellular and with wide lumen
Vessels are multicellular and with wide lumen
Vessels are unicellular and with narrow lumen
Tracheids are multicellular and with narrow lumen
15560.Sequence of cellular layers from the periphery towards the cortex in an old dicot stem is
Epidermis, Hypodermis, Phellogen, Phelloderm
Epidermis, Phellem, Phellogen, Phelloderm
Epidermis, Hypodermis, Cortex, Endodermis
Epidermis, Phellogen, Phellem, Epidermis
15561.How many plants in the list given below have composite fruits that develop from an inflorescence?Walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry.
Two
Three
Four
Five
15562.The length of different internodes in a culm of sugarcane is variable because of:
Position of axillary buds
Shoot apical meristem
Intercalary meristem
Size of leaf lamina at the node below each internode
15564.In China rose the flowers are
Actinomorphic, hypogynous with twisted aestivation
Actinomorphic, epigynous with valvate aestivation
Zygomorphic, hypogynous with imbricate aestivation
Zygomorphic, epigynous with twisted aestivation
15565.G.H. Shull observed inbreeding depression in a plant. Miller and Letham isolated a hormone from the immature seeds of that plant. Which of the following character is NOT associated with that plant?
Chromosomal number of endospermous cell is 30
Bundle sheath in leaf
Atactostelic condition in stem
Medulla absent in the root
15566.Read the following statements A and B.
A: Many organs of aquatic plants float in water.
B: Large air gaps are present in the collenchyma tissues of lotus leaf.
Select the correct answer.
Statement A is correct and B is wrong
Statement B is correct and A is wrong
Statements A and B both are correct
Statements A and B both are wrong
15567.In a flower, there are five unequal petals. The posterior petal is the largest. The two anterior petals are partially fused to form a boat shaped structure. The two lateral petals are smaller than the posterior petal.
Which one of the following characters is not associated with such a flower?
The aestivation of the petals is descendingly imbricate
The odd sepal is anterior
The pollination is by piston mechanism
The number of carpels is many
15568.Match the lists and select the code.
| List –I | List – II |
|---|---|
| A. Exarch | I. Rhizome of Pteris |
| B. Endarch | II. Roots of Pteris |
| C. Mesarch | III. Pinnule of Cycas |
| D. Pseudo-mesarch | IV. Primary stem of Pteris |
A - I, B - III, C - IV, D - II
A - II, B - IV, C - III, D - I
A - II, B - IV, C - I, D - III
A - III, B - II, C - I, D - IV
15569.Vascular bundles in monocotyledons are considered closed because
A bundle sheath surrounds each bundle
There are no vessels with perforations
Xylem is surrounded all around by phloem
There is no secondary growth