Give differences : Gymnosperms and Angiosperms.
Gymnosperms | Angiosperms |
$(1)$Their seeds are open and not covered by any ovary wall. | $(1)$Their seeds are enclosed by ovary wall. |
$(2)$It shows single fertilization. | $(2)$It shows double fertilization. |
$(3)$Flowers are of primary type and do not possess colourful petals. | $(3)$Flowers are well developed and possess |
$(4)$Endosperm develops before fertilization and it is haploid. | $(4)$Endosperm is formed after fertilization and it is haploid. |
$(5)$Male flowers are as microspore. | $(5)$Stamen is as male reproductive organ |
$(6)$Male and female flowers develop on different plants. |
$(6)$Male and female reproductive organs are produced in either one flower or in different flowers on one plant or in different plants. |
$(7)$Pollination occurs through wind e.g. Cycas, Pinus. |
$(7)$Pollination occurs through wind, water, insects or by other factors. e.g. Sunflower, Maize. |
The endosperm in angiosperms develops from
Wolfia is an example of....
Triploid condition is only present in
How many organisms in the list given below are autotrophs?
Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces,Trypanosoma, Porphyra, Wolffia
Flowering plants are more successful than other members of the plant world because