Q21
Gemmae are present in
Correct Answer
Option A
Solution
Gemmae are green, multicellular asexual buds produced by some liverworts like Marchantia.
Plant Kingdom
Q22
Which of the following algae produce Carrageen?
Correct Answer
Option D
Solution
The cell wall of red algae is composed of agar, carrageen and funori along with cellulose.
Q23
Which of the following algae contains mannitol as reserve food material?
Correct Answer
Option B
Solution
Ectocarpus is a brown alga (Phaeophyceae). Members of this class have mannitol and laminarin as stored food material.
Q24
Which of the following pairs is of unicellular algae?
Correct Answer
Option C
Solution
Chlorella and Spirulina are unicellular algae.
Gelidium, Gracilaria, Laminaria and Sargassum are multicellular.
Volvox is colonial.
Q25
Floridean starch has structure similar to
Correct Answer
Option A
Solution
Floridean starch is the stored food material in red algae. Its structure is similar to amylopectin and glycogen.
Q26
Strobili or cones are found in
Correct Answer
Option C
Solution
Strobili or cones are found in Equisetum. They contain sporangia and perform the function of protecting spores.
Q27
Retention of the female gametophyte with developing young embryo on the parent sporophyte is first observed in:
Correct Answer
Option A
Solution
In pteridophytes, the female gametophytes are retained on the parent sporophytes and zygotes develop into young embryos within the female gametophytes.
This is a precursor to the seed habit.
Q28
Which one is wrongly matched?
Correct Answer
Option B
Solution
Polysiphonia is a red alga (Rhodophyceae) which reproduces by non-motile spores and non-motile gametes.
Q29
Which of the following statements is correct?
Correct Answer
Option C
Solution
Gymnosperms have ovules not enclosed by an ovary wall.
Selaginella and Salvinia are both heterosporous.
Pinus/Cedrus is branched.
Horsetails (Equisetum) are pteridophytes.
Q30
Zygotic meiosis is characteristic of
Correct Answer
Option C
Solution
In Chlamydomonas, the zygote divides by meiosis. It exhibits a haplontic type of life cycle.
Ready for a full NEET mock test?
Timed · full syllabus · instant results
Take a Mock Test →