University of Delhi 2005 B.Sc Zoology (Hons.)subsidiary -Botany-II - Question Paper

Subsidiary for B.Sc. (Hons.)-(NC) D
I exam
BOTANY-Paper II
(Plant Structure)
(Admission of 2003 and onwards)

Time: three Hours

Maximum Marks : 50

Attempt any 5 ques..
ans all parts of a ques. together.

All ques. carry equal marks.
1. Write short notes on any 4 (marks10)
(a) Anther culture;
(b) Air layering; .
(c) Sclereids;
(d) Sieve tube element;
(e) Collenchyma.

( two ) Differentiate ranging from : (marks10)
(a) . Apocarpy and syncarpy;
(b) Periderm and perisperm;
(c) Phyllode and phylloclade;,
(d) Helicoid and scorpoid cyme;
(e) Hypogynous and perigynous flower .

3. Enumerate the differences ranging from dicot and monocot stem. Draw 'well-labelled diagrams.(marks10)
4. (a) explain merits and demerits of Bentham and Hooker's system of classification. (marks6)
(b) provide an account of structure and function of' endodermis. (marks4)

5. Write short notes on : (marks10)
(a) Simple tunicated bulb;
(b) Offset;
(c) Hypanthodium;
(d) Grafting.

.6. Draw well-labelled diagrams of any 4 : (marks10)
(a) V.S. of capitulum;
(b) T.S. of mature anther;
(c) T.S. of monocot leaf;
(d) L.S. of orthotropous ovule
7. a) define various kinds of venation in plants. (marks5)
b)What is double fertilization ? provide its significance. (marks 5)

Earning:   Approval pending.