Biology Today — December 2017

15. Select the option which correctly identifies types of flower
    regarding position of floral parts on thalamus with their examples
    in the given figures.

(^) A B C
A B C
(a) Perigynous–
Cucumber
Hypogynous–
China rose
Epigynous–
Peach
(b) Hypogynous–
Mustard
Perigynous–
Rose
Epigynous–
Guava
(c) Epigynous–
Brinjal
Hypogynous–
China rose
Perigynous–
Plum
(d) Hypogynous–
China rose
Epigynous–
Peach
Perigynous–
Guava

16. Read the given characteristics and identify the type of
    inflorescence.
    I. It is a type of simple racemose inflorescence.
    II. The axis is flattened to form a receptacle.
    III. Flowers are sessile called florets.
    IV. This type of inflorescence is found in Tagetes and
    sunflower.
    (a) Capitulum (b) Umbel
    (c) Spadix (d) Catkin


17. Read the following statements and choose the correct ones.
    I. In all fleshy or succulent fruits pericarp remains
    undifferentiated.
    II. Offsets are one internode long remains found at
    ground level in rosette plants.
    III. Etaerio is a group of simple fruitlets that develop from
    fused ovaries of multiple flowers.
    IV. Caryopsis is a false or pseudocarpic fruit.
    (a) I and III (b) II only
    (c) IV only (d) III and IV


18. Which of the following figures represents synandrous
    condition of stamens?

(a) (b)

(c) (d)

19. Read the given characteristics of an unknown plant.
    (i) It is a perennial herb.
    (ii) Leaves simple, exstipulate with sheathing bases and
    parallel venation.
    (iii) Trimerous, hypogynous and pentacyclic flowers having
    undifferentiated calyx and corolla as perianth.
    (iv) Androecium consists of six stamens in two whorls.
    (v) Gynoecium is tricarpellary, syncarpous ovary trilocular
    with axile placentation.
    (vi) Fruits is capsule or berry.
    According to the given characteristics, the plant belongs to
    the Family
    (a) Solanaceae (b) Fabaceae
    (c) Liliaceae (d) Malvaceae.


20. Select the option which correctly fills blanks (i)-(iv).
    A. Gram seed is covered by two seed coats - outer (i) and
    inner (ii).
    B. The embryo axis in gram seed is present between (iii).
    C. Gram seed is (iv).
    (i) (ii) (iii) (iv)
    (a) testa tegmen cotyledons endospermic
    (b) chalaza testa cotyledons non-endospermic
    (c) tegmen testa radicle endospermic
    (d) testa tegmen cotyledons non-endospermic


21. Refer to the given figure of a fruit and select incorrect
    statement regarding it.
    (a) B represents aleurone
    B

C

A

D

layer.

(b) C represents

membranous endocarp.

(c) A and B form a common

covering around all

loculi.

(d) D represents placental

hair which form edible

part of fruit.

22. Match column I with column II and select the correct option
    from the given codes.
    Column I Column II
    A. Climbing roots (i) Tinospora
    B. Stilt roots (ii) Vanda
    C. Assimilatory roots (iii) Tecoma
    D. Hygroscopic roots (iv) Jussiaea
    E. Floating roots (v) Pandanus
    (a) A-(iii), B-(v), C-(i), D-(ii), E-(iv)
    (b) A-(iv), B-(iii), C-(ii), D-(v), E-(i)
    (c) A-(iii), B-(ii), C-(iv), D-(i), E-(v)
    (d) A-(v), B-(ii), C-(i), D-(iii), E-(iv)