- Home
- Standard 11
- Biology
3.Plant Kingdom
medium
Differentiate between the following:
$(i)$ red algae and brown algae
$(ii)$ liverworts and moss
$(iii)$ homosporous and heterosporous pteridophyte
$(iv)$ syngamy and triple fusion
Option A
Option B
Option C
Option D
Solution
$(i)$ Red algae and brown algae
| Red algae | Brown algae | ||
| $(1)$ | Red algae are grouped under the class Rhodophyceae. | $(1)$ | Brown algae are grouped under the class Phaeophyceae. |
| $(2)$ | They contain floridean starch as stored food | $(2)$ | They contain mannitol or laminarin as stored food. |
| $(3)$ | They contain the photosynthetic pigments chlorophylls $a$ and $d ,$ and phycoerythrin. | $(3)$ | They contain the photosynthetic pigments chlorophylls a and $c,$ and fucoxanthin. |
| $(4)$ | Their cell walls are composed of cellulose, pectin, and phycocolloids | $(4)$ | Their cell walls are composed of cellulose and algin. |
| $(5)$ | Flagella are absent | $(5)$ | Two flagella are present |
$(ii)$ Liverworts and moss
| Liverworts | Moss | ||
| $(1)$ | They have unicellular rhizoids. | $(1)$ | They have multicellular rhizoids. |
| $(2)$ | Scales are present very often | $(2)$ | Scales are absent |
| $(3)$ | They are generally thalloid, with dichotomous branching. | $(3)$ | They are foliage, with lateral branching |
| $(4)$ | Gemma cups are present | $(4)$ | Gemma cups are absent |
| $(5)$ | Sporophyte has very photosynthetic tissue little | $(5)$ | Sporophyte has abundant photosynthetic tissue |
$(iii)$ Homosporous and heterosporous pteridophyte
| Homosporous pteridophytes | Heterosporous pteridophytes | ||
| $(1)$ | They bear spores that are of the same type. | $(1)$ | They bear two kinds of spores – microspores and megaspores. |
| $(2)$ | They produce bisexual gametophytes. | $(2)$ | They produce unisexual gametophytes. |
$(iv)$ Syngamy and triple fusion
| Syngamy | Triple fusion | ||
| $(1)$ | It is the process of fusion of the male gamete with the egg in an angiosperm | $(1)$ | It is the process of fusion of the male gamete with the diploid secondary nucleus in an angiosperm |
| $(2)$ | A diploid zygote is formed as a result of syngamy. | $(2)$ | A triploid primary endosperm is formed as a result of triple fusion. |
Standard 11
Biology
Similar Questions
medium
medium
Match the plant with the kind of life cycle it exhibits:
| $List-I$ | $List – II$ |
| $(a)$ Spirogyra | $(i)$ Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte |
| $(b)$ Fern | $(ii)$ Dominant haploid free-living gametophyte |
| $(c)$ Funaria | $(iii)$ Dominant diploid sporophyte alternating with reduced gametophyte called prothallus |
| $(d)$ Cycas | $(iv)$ Dominant haploid leafy gametophyte alternating with partially dependent |
Choose the correct answer from the options given below:
