Which of the following soil has the highest water holding capacity_________?

A. Sand soil
B. Silt soil
C. Forest soil
D. None of these

Nitrosomonas  and nitrobacter are together as called_____________?

A. Ammonification
B. Nitrification
C. Nitosomonas
D. Nitrobacteria

International Union of Soil Sciences (IUSS), founded in___________?

A. 1624
B. 1724
C. 1824
D. 1924

The soils in which the weathered material is taken away to other place by several agents are called__________?

A. Alluvial soil
B. Aeolian soil
C. Transported soil
D. None of these

Aridisols cover the largest in Pakistan_______?

A. 259,710 km2
B. 269,810 km2
C. 278,910 km2
D. None of these

Soil pores created by the animal such as earthworm and plant root are called_________?

A. Biopores
B. Diameter
C. Mesopores
D. Microspores

The body of an insect is covered by a protective __________________ formed from chitin and protein. Depending upon its precise composition and thickness, the cuticle may be soft and flexible or hard and rigid; according to requirements, it may or may not be permeable or waterproof:

A. Three-layered skin (cuticle)
B. Two-layered skin (cuticle)
C. Six- layered skin (cuticle)
D. None of the above

The insect head is essentially a capsule which encloses the brain and bears the usually external (ectognathous) mouthparts, the eyes and a pair of sensory antennae. The mouth part comprise basic sections as:

A. An ‘upper lip’ (labrum), lower (ventral) surface of which forms the epipharynx
B. A tongue-like hypopharynx; the jaws (mandibles)
C. The paired maxillae and a ‘lower lip’ (labium).
D. All of these

All harvested crops remove plant nutrients from the soil. Whether used for _______________; the various crop products are often consumed far away from the production sites, some times thousands of kilometers away in another country.

A. Food
B. Feed
C. Industrial raw materials
D. All of these

Acidlime is commercially propagated by________?

A. Grafting
B. Seed
C. Cutting
D. All of the above