Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
(1) In angiosperms, functional megaspore develops into [CBSE PMT’2011M]
(a) Embryo sac
(b) Ovule
(c) Endosperm
(d) Pollen sac
Answer: a
Solution:
During megametogenesis functional megaspore (most chalazal) gives rise to embryo sac. This is the mature female gametophyte generation.
(2) Cycas and Adiantum resemble each other in having [CBSE PMT’2012M]
(a) Seeds
(b) Motile Sperms
(c) Cambium
(d) Vessels
Answer: b
Cycas (a gymnosperm) and Adiantum known as Maiden hair fern is a pteridophyte resemble each other in having motile sperm. Seeds, cambium are common in gymnosperms and absent in pteridophytes. True vessels are absent in both pteridophytes and gymnosperms.
(3) Gymnosperms are also called soft wood spermatophytes because they lack [CBSE PMT’2012M]
(a) Cambium
(b) Phloem fibres
(c) Thick-walled tracheids
(d) Xylem fibres
Answer: d
Gymnosperms lack thick walled tracheids rendering them soft-wood because tracheids impart strength to wood. Tracheids are the elongated cells in xylem.
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question