GYMNOSPERM Occurrence Gymnosperms are naked seeded plants. Gynmosperms are a group of ancient plants. They become dominant in the Jurassic period Most of the gymnosperms are evergreen trees. Some shrubby…
SEED HABIT A seed consists of an embryo, stored food and a seed coat. The seed habit is the most complex and evolutionary successful method of sexual reproduction. It is…
PTEROPSIDA (FERNS) TYPE III POLYPODIUM Occurrence Polypodium is a perennial herb. It is found mostly in temperate regions. It has worldwide distribution. Mostly is attached to some rocks. But some…
Answer of Question of Temperature & Body Fluid Regulation
PTEROPSIDA (FERNS) TYPE II MARSILEA (Water fern) Occurrence Marsilea is an aquatic or semi aquatic plant. It is common in the temperate regions. It groNA in fresh water ponds and…
Answer of Question of Temperature & Body Fluid Regulation
Chapter 9 Zoology Past Papers
STRUCTURE OF LEAF Different groups of plants hake different variations in the internal structure or foliage leaves. Hie leaves show different evolutionary adaptations for different environmental conditions. The leaf tissues…
SECONDARY GROWTH IN STEM The stem increases in thickness In secondary growth. Secondary growth increases the vascular tissues. Therefore, it increases the thickness of flue stein. Secondary growth is common…
Chapter 9 ZOOLOGY OBJECTIVES
abida
rubab
sidra