TYPE: PYTHIUM
abida Occurrence It is common in soil water. Its various species live as saprophyte. Some of them live on decaying plant as parasites. The parasitic stage attacks the roots and the…
Evolutionary Pressures in Mammals
saadia EVOLUTIONARY PRESSURES IN MAMMALS Mammals are naturally distributed on all continents except Antarctica. They live in all oceans. EXTERNAL STRUCTURE AND LOCOMOTION SKIN The skin of a mammal consists of…
Classification of Mammals
CLASSIFICATION OF MAMMALS Class Mammalia Mammary glands: hair: diaphragm: three middle-car ossicles; heterodont dentition;sweat, sebaceous and scent glands: four- chambered heart; large cerebral cortex. (a) Subclass Prototheria This subclass formerly…
Diversity of Mammals
DIVERSITY OF MAMMALS Modern mammals have following characteristics: 1. They have hair on the body. 2. They have mammary glands. 3. They have specialized teeth. They have heterodont dentition 4.…
Mammals Evolutionary Perspective
MAMMALS EVOLUTIONARY PERSPECTIVE Tertiary period started about 70 million years ago. It was the start of the “age of mammals.” It produces adaptive radiation in the mammals. Extinction of many…
OBJECTIVES OF BIRDS
OBJECTIVES OF BIRDS Multiple Choice Questions MCQs 1. The age of reptiles is: (a) Jurassic period (b) Tertiary period (c) Secondary period (d) Triassic period 2. Early synapsids were: (a)…
MULTIPLE CHOICE QUESTIONS AND FILL IN BLANKS OF STRUCTURE OF PLANTS PARTS
MULTIPLE CHOICE QUESTIONS AND FILL IN BLANKS OF STRUCTURE OF PLANTS PARTS 1. Casparian strips are present in (a) Cortex (b) Epidermis (c) Stele (d) Endodermis 2. The outer most…
SHORT QUESTIONS OF STRUCTURE OF PLANT PARTS
SHORT QUESTIONS OF STRUCTURE OF PLANT PARTS 1. Differentiate between tap and adventitious roots. Ans: Tap root arise from the embryo. Adventitious root develops from other mature tissues of plant…
SUBJECTIVE QUESTIONS OF STRUCTURE OF PLANTS PARTS
SUBJECTIVE QUESTIONS OF STRUCTURE OF PLANTS PARTS 1. Describe structure of root. 2. Give secondary growth in root. 3. Compare monocots and dicot roots 4. Describe structure of stem. 5.…
DEFINITIONS AND KEY POINTS FOR OBJECTIVES OF STRUCTURE OF PLANTS PARTS
DEFINITIONS AND KEY POINTS FOR OBJECTIVES OF STRUCTURE OF PLANTS PARTS