Biology Today - February 2018

I II III IV

(a) T T F T

(b) T F T F

(c) F F T T

(d) F T F T

21. Study the given table and identify A, B, C and D.

Name Type of fruit Fleshy part

Date Palm

Mango

Litchi

Pineapple

Berry

B

C

Sorosis

A

Mesocarp

Aril

D

(a) A-Endocarp, B-Drupe, C-Pome, D-Peduncle

(b) A-Pericarp, B-Drupe, C-Nut, D-Peduncle

(c) A-Mesocarp, B-Berry, C-Nut, D-Fleshy thalamus

(d) A-Pericap, B-Drupe, C-Sorosis, D-Peduncle

22. Select the correct statement about placentation.
    (a) Axile placentation occurs in syncarpous pistil.
    (b) In free central placentation, the ovule bearing
    column is attached to the wall of the ovary by septa.
    (c) The ovary is always multilocular in marginal
    placentation.
    (d) Parietal placentation is present in 5DQXQFXOXV.


23. The given flowchart depicts types of schizocarpic fruits.
    Identify A, B, C, D in the flowchart and select the correct option.
    Schizocarpic fruits

Cremocarp AB C D

(a) A-Follicle, B-Carcerulus, C-Regma, D-Nut

(b) A-Lomentum, B-Carcerulus, C-Compound samara,

D-Regma

(c) A-Amphisaria, B-Balausta, C-Compound samara,

D-Sorosis

(d) A-Hesperidium, B-Sorosis, C-Berry, D-Lomentum

24. Which of the following statement is incorrect?
    (a) Coleoptile is a conical protective sheath over radicle.
    (b) Coleoptile and coleorrhiza are present in monocot
    seeds.
    (c) In dicot seeds plumule lies in between the two
    cotyledons.
    (d) Aleurone layer is absent in dicot seeds.


25. Identify the correct statement about corolla.
    (a) Campanulate corolla is present in %U\RSK\OOXP.
    (b) Urn-shaped corolla is present in &OHURGHQGURQ.
    (c) Corolla is bilipped in sunflower.
    (d) Corolla is shaped like a funnel in 3HWXQLD.


26. Which of the following statements is correct about
    dehiscence of fruits?

(a) Dehiscence in /XIID takes place by means of apical

teeth present in the capsule.

(b) The fruit dehisces by longitudinal slits present on

the dorsal sutures of the ovary in 3RUWXODFD.

(c) The fruit dehisces by means of pores in poppy.

(d) In 'DWXUD, fruit dehisces by longitudinal slits that

appear along the middle of septa.

27. Match the following and select the correct option.
    Column I Column II
    Plant Floral formula
    A. :LWKDQLD
    VRPQLIHUD

(i) % K(5) C1+2+(2)A(9)G 1

B. 'DOEHUJLD

VLVVRR

(ii) † K(5) C 5 A 5 G(2)

C. )RHQLFXOXP

YXOJDUH

(iii) † K(5) C(5) A 5 G(2)

D. &KHQRSRGLXP

DOEXP

(iv) †^ P3+3 A3+3 G(3)

E. 5KRHRGLVFRORU (v) † P 5 A 5 G(3)

(a) A-(iii), B-(i), C-(ii), D-(v), E-(iv)

(b) A-(iii), B-(ii), C-(v), D-(iv), E-(i)

(c) A-(ii), B-(iii), C-(i), D-(v), E-(iv)

(d) A-(ii), B-(v), C-(iv), D-(iii), E-(i)

28. Perianth represented by two teeth like lodicules is present in
    (a) &DQQDK\EULGD (b) 5LFLQXVFRPPXQLV
    (c) %HWDYXOJDULV (d) $YHQDVDWLYD


29. Match the column I with column II and select the correct option.
    Column I Column II
    A. $VSDUDJXV (i) Berry
    B. $WURSDEHOODGRQD (ii) Legume
    C. Solanaceae (iii) Liliaceae
    D. 9LFLDIDED (iv) Pain relief
    (a) A-(ii), B-(iv), C-(iii), D-(i)
    (b) A-(iii), B-(iv), C-(i), D-(ii)
    (c) A-(ii), B-(iii), C-(i), D-(iv)
    (d) A-(iii), B-(i), C-(ii), D-(iv)


30. The type of fruit constricted in between the seeds is called
    (a) amphisarca (b) balausta
    (c) lomentum (d) siliqua.

ANSWER KEY

1. (c) 2. (a) 3. (b) 4. (c) 5. (a)


2. (a) 7. (c) 8. (a) 9. (d) 10. (b)


3. (d) 12. (c) 13. (b) 14. (b) 15. (c)


4. (a) 17. (b) 18. (a) 19. (c) 20. (c)


5. (b) 22. (a) 23. (b) 24. (a) 25. (d)


6. 
   

   (c) 27. (a) 28. (d) 29. (b) 30. (c)