MCQ
Canal system is a characteristic of
- AHydra
- ✓Sponge
- CSea anemone
- DSea urchin
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Statement $I$: Ligaments are dense irregular tissue.
Statement $II$: Cartilage is dense regular tissue.
In the light of the above statements, choose the correct answer from the options given below:
$(a)$ Mosses and Lichens are the firstorganisms to colonise a bare rock
$(b)$ Selaginella is a homosporous pteridophyte
$(c)$ Coralloid roots in Cycas have VA Micorrhizae
$(d)$ Main plant body in bryophytes isgametophytic, whereas in pteridophytes it is sporophytic
$(e)$ In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte
($i$) It is made of a single thin layer of flattened cells with irregular boundaries.
($ii$) They are found in the walls of blood vessels and air sacs of lungs.
($iii$) They are involved in functions like forming a diffusion boundary. Which of the following characteristics of tissue is being described by the above statements?
| Column-$I$ (Fungus name) | Column-$II$ (Commonly called) |
| $A$. Puccinia | $I$. Yeast |
| $B$. Ustilago | $II$. Mushroom |
| $C$. Agaricus | $III$. Smut fungus |
| $D$. Saccharomyces | $IV$. Rust fungus |