Q.1.
Identify X, Y and Z in the table given below:
| Classes | Major pigments | Stored food | Flagella |
| Chlorophyceae | Chlorophyll a and b | Y | 2 – 13, equal, apical |
| Phaeophyceae | X | Mannitol, Laminarin | 2, unequal, lateral |
| Rhodophyceae | Chlorophyll a and c | Floridean starch | Z |
-
10%
a) X – Fucoxanthin, Y – Starch, Z – 2 – 8 flagella.
-
38%
b) X – Phycobilins, Y – Mannitol, Z – Flagella absent.
-
7%
c) X – Chlorophyll e, Y – Laminarin, Z – 2 flagella.
-
45%
d) X – Chlorophyll a and c, Y – Starch, Z – Flagella absent.
Q.2.
Study the following characters carefully and give the most correct answer with respect to their function:
| Gemma | Endosperm | |
| (A) | For asexual reproduction | For nutrition of developing embryo |
| (B) | For sexual reproduction | For embryo formation |
| (C) | For vegetative propagation | For formation of male gametes |
| (D) | For giving nutrition | For giving protection |
-
48%
a) A
-
29%
b) B
-
10%
c) C
-
14%
d) D
Q.3.
Identify the structures marked a –c for Marchantia:
-
32%
a) a – Antheridiophore, b – Protonema, c – Rhizoids.
-
26%
b) a – Sporophyte, b – Gemma cup, c – Rhizoids.
-
21%
c) a – Sporophyte, b – Protonema, c – Rhizoids.
-
21%
d) a – Archegoniophore, b – Gemma cup, c – Rhizoids.
Q.4.
Identify the pteridophyte and structure marked as X:
-
26%
a) Equisetum, X – Strobilus/cone.
-
16%
b) Equisetum, X – antheridia.
-
21%
c) Equisetum, X – Archegonia.
-
37%
d) Equisetum, X – Microsporangium.
Q.5.
Refer the given flow chart regarding different groups of plant kingdom: Which of the following is true regarding P, Q, R, S and T?
-
24%
a) Examples of group P includes Riccia, Marchantia, Sphagnum, etc.
-
19%
b) Members of group R can be both heterosporous and homosporous.
-
29%
c) Group Q includes seedless vascular plants which have a sporophytic plant body.
-
29%
d) Group S is more ancient than group T and formed as a dominant vegetation on earth.