MCQ
Which of the following important features are found in blue-green algae
- AAbundant secretion of pectin
- BPresence of phycocyanin $ -C$ as dominant pigment
- CNo plastids
- ✓All the above
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$Y$ - Growth is character of only non-living.
| Column $-I$ | Column $-II$ |
| $(1)$ Pollination by water | $(a)$ Grass |
| $(2)$ Pollination by wind | $(b)$ free-nuclear endosperm |
| $(3)$ coconut water | $(c)$ Guava |
| $(4)$ Fleshy fruit | $(d)$ Hydrilla |
| $(e)$ cellular endosperm |
$(i)$ All living organisms have ability to respond the environment stimuli which could be physical, chemical or biological.
$(ii)$ Plants respond to external factors like light, water, temperature, other organisms, pollutants, etc.
$(iii)$ Photoperiod affects the process of reproduction.
$(iv)$ Human being is the only organism who has self consciousness.