Crop rotation helps in_____.

1. 1. Growth of pathogens
   2. Soil Infertility
   3. Eradication of disease
   4. Slowing of crops growth

Who is Called the Father of Demography?

1. 1. Ibn Khaldun
   2. ALAN Turing
   3. John Dalton
   4. Charles Babbage

Length of membranous urethra is about _____.

1. 1. 2 cm
   2. 1 cm
   3. 5 cm
   4. 9 cm

Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.

1. 1. Troponin uncovers the actin binding sites
   2. Binding sites of actin get attached to the myosin head.
   3. Ca2+ goes back inside sarcoplasmic reticulum
   4. Tropomyosin gets removed from the binding sites of actin filaments

Gametophyte of Psilopsida develops a symbiotic association with which of the following_____.

1. 1. Fungus
   2. Algae
   3. Bacteria
   4. Protozoa

Heart beats about _____times in one’s life.

1. 1. 3.7 Billion
   2. 4.2 Billion
   3. 2.8 Billion
   4. Infinite

Removal or degradation of environmental pollutants or toxic materials by living organisms is called_____.

1. 1. Integrated disease management
   2. Bioremediation
   3. Hydroponic culture technique
   4. Pasteurization

The word which E-Chatton suggested for bacteria and blue green algae was_____.

1. 1. Pro-cariotique
   2. Autotrophs
   3. Heterotrophs
   4. Eu-cariotique

Unlike other algae, diatoms do not readily decay due to_____.

1. 1. Nonliving cells
   2. Mucilaginous wall
   3. Water proof cell
   4. Siliceous wall

Nervous system of nematods consists of?

1. 1. Dorsal nerve cord
   2. Ventral nerve cord
   3. Lateral nerve cord
   4. All of these