2031. Essential constituent of plant cell is which type of carbohydrates ?

A. Sucrose
B. Starch *
C. Lignin
D. Cellulose

2032. Quinine is a _________ resource :

A. Mineral
B. Agricultural
C. Forest *
D. None of these

2033. The anti-malarial drug Quinine is made from a plant . The plant is :

A. Neem
B. Eucalyptus
C. Cinnamon
D. Chichona *

2034. Which one is the rootless plant ?

A. Pistia
B. Monochoria
C. Eichhornia *
D. Ceratophyllum

2035. The element which is required by the plant in large quantity ?

A. Calcium
B. Sulphur
C. Phosphorus
D. Nitrogen *

2036. Sandalwood tree is considered a :

A. Partial root parasite *
B. Stem Parasite
C. Total stem parasite
D. Total root parasite

2037. Development of fruit without fertilization is :

A. Parthenogenesis
B. Apomixes
C. Parthenocarpy *
D. Fertilization

2038. The one which can tolerate highest external osmotic pressure :

A. Algae
B. Amoeba
C. Fungi *
D. Bacteria

2039. The greatest diversity of animals in the lake is found in which one of the following zones ?

A. Limnetic zone
B. Littoral zone *
C. Profundal zone
D. None of these

2040. What is the characteristic feature of consumers ?

A. Autotroph
B. Heterotroph *
C. Parasite
D. Saprophyte