MCQ
Gibberellin is obtained from a
- ✓Fungus
- BAlga
- CBasidiolichen
- DFlowering plants
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$I$. They reproduce asexually by non-motile spores and sexually by non-motile gametes
$II$. In this class, sexual reproduction is oogamous and accompanied by complex post-fertilisation developments
$III$. The common members are Polysiphonia, Porphyra, Gracilaria and Gelidium
The above characteristics are belongs to which class of algae
| Column-$I$ | Column-$II$ |
| $A$. Leeuwenhoek | $I$. First saw and described a living cell |
| $B$. Robert Brown | $II$. Presence of cell wall is unique to plant cells |
| $C$. Schleiden | $III$. Discovered the nucleus |
| $D$. Schwann | $IV$. All plants are composed of different kind of cells |
$I.$ Water is essential for fertilisation
$II.$ Male gametophyte bears antheridia, while female gametophyte bears archegonium, which produces antherozoids and egg cell, respectively
$III.$ Antherozoids and egg cell fuses to give rise zygote. Zygote develops into young embryo. Embryo give rise to sporophyte
Which of the statements given above are correct?
$(i)$ In chlorophyceae, the stored food material is starch and the major pigments are chlorophyll $-a$ and $d$.
$(ii)$ In phaeophyceae, laminarian is the stored food and major pigments are chlorophyll $-a$ and $b$.
$(iii)$ In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll $-a, d$ and phycoerythrin