Neet Solved Paper 2015 Question 2
Question: Read the following five statements (I to V) and. select the option with all correct statements.
I. Mosses and lichens are the first organisms to colonize a bare rock.
II. Selaginella is a homosporous pteridophyte.
III. Coralloid roots in Cycas have VAM.
IV. Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.
V. In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.
Options:
A) I, III and IV
B) II, III and IV
C) I, IV and V
D) II, III and V
Show Answer
Answer:
Correct Answer: C
Solution:
I IV and V are correct statements.
II. Selaginella species are creeping or ascendant plants and produce heterospores (megaspores and microspores).
III. Coralloid roots are developed in Cycas. It produces as cluster at base of stem. It is dichotomously branched and greenish brown in colour.
It contains algal zone in the cortex. This algal zone contains Nostoc and Anabaena which grow in symbiotic association with coralloid root.
