Brown algae are eukaryotic marine algae which possess chlorophyll a, chlorophyll c, abundant fucoxanthin. Brown algae include the largest algae. The giant brown algae are called Kelps. The largest kelps are Macrocystis ( 40 - 100 m) and Nereocystis ( 20 - 30 m). Alginic acid is a phycocolloid which is obtained commercially from Macrocystis and Nereocystis.

Bryophytes are nonvascular terrestrial plants of moist habitats in which a multicellular diploid sporophyte lives as a parasite on an independent multicellular haploid gametophyte that develops multicellular jacketed sex organs. Bryophytes (Mosses) has a radial symmetry, multicellular rhizoids. The plants are always leafy and leaves generally have a midrib, lateral branching.

The ovule is part of female reproductive organ in seed plants. It’s the place where female reproductive cells are developed into a seed after fertilization. The seed then ripens and produce a complete adult plant. Ovules are contained in ovaries at the bottom of a vase-like structure, the carpel, which has a neck called a style and an opening at the top, called a stigma.

E M B I B E

TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 6 - Plant Kingdom>TEST QUESTIONS>Q 2

EASY

11th CBSE

IMPORTANT

Earn 100

Name a plant that forms fruits but no seeds, and another plant that forms seeds but no fruit.

Important Questions on Plant Kingdom

MEDIUM

11th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 6 - Plant Kingdom>TEST QUESTIONS>Q 3

Observe the relationship between the first two words and then fill in the fourth place
(i) Angiosperms : roots :: Rhodophyta : ________
(ii) Fern : prothallus :: moss : ________
(iii) Moss : capsule :: fern : ________
(iv) Angiosperms : flowers :: conifers ________