2701. Deforestation may decrease the chances of__________?
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A. land sliding

B. Wind erosion

C. None of these

D. Rainfall
2702. ____________ may be defined as the art and science of cutting away of portion of plant to improve its shape, to influence its growth, flowering and fruitfulness and to improve the quality of the product:
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A. Pruning

B. Littering

C. Layering

D. Cutting

2703. Soil is a variable mixture of Major components:
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A. Liquids

B. Solids

C. All of the above

D. Gases

2704. A & B horizon is called as:________?
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A. None of the above

B. Series

C. Poly-pedon

D. Regolith

2705. The physical condition of soil is called________?
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A. Tiller

B. Tilth

C. None of these

D. Tillage

2706. Insect body divided into external grooves called Sutures___________?
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A. Somites

B. Sclerite

C. Acron

D. Sutures
2707. ___________ , considered a perfect soil, is a mixture of silt, clay and sand:
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A. Loam

B. Sandy loam

C. Clay

D. Loamy sand

2708. Wash-in takes place in which horizon?
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A. E

B. A

C. O

D. B
2709. Soil conservation is performed by:_________?
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A. By plantation

B. Cutting trees

C. Excessive grazing

D. By heavy irrigation

2710. 1 Cusec is 28.3 liters, 1 Cumec is 1000 liters. So, 1 ha mm :
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A. None of the above

B. 100,000 liters or 10<sup>5</sup>

C. 10,000 liters 104

D. 100,000,00 liters or 10<sup>7</sup>

2711. Which of the following nutrient play the most effective role in controlling rate of transpiration:
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A. Phosphorus

B. Mg

C. Potassium

D. Zinc

2712. Raising of only one crop in a year when there is seasonal supply of water is called_________?
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A. Multiple cropping

B. Monocropping

C. Harvest cropping

D. None of these

2713. Inceptisols:___________?
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A. Dry soils

B. Young soils with few horizons

C. Volcanic soils

D. Organic soils

2714. Transportation & cementation of primary rocks:
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A. All of the above

B. Aqueous rocks

C. Sedimentary rocks

D. Secondary rocks

2715. One of the following is not a form of water erosion:
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A. Saltation

B. Sheet erosion

C. Rainsplash erosion

D. Rill erosion

2716. A tail, including the tail-like structure of an aphid:_______?
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A. Apical

B. Annulate

C. Cauda

D. Cenchri

2717. Mouthparts of Sugarcane pyrilla are:___________?
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A. Biting

B. Sucking

C. Siphoning

D. Chewing

2718. The available soil is being polluted quickly by _____________ wastes.
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A. Agricultural

B. All of the above

C. Household

D. Industrial

2719. Ammonium sulfate fertilizer containing 21% N & 24% S, is best in top dressing in:_________?
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A. None of these

B. Barley

C. Date palm

D. Rice
2720. Which type of structure is dominant in grasslands:
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A. Platy & Luminar

B. Spheroidal or Sphere-like

C. Prismatic & Columnar

D. Angular blocky Sub-angular blocky

2721. Which is the main cause of desertification?
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A. Over grazing

B. Dry farming agriculture

C. None of the above

D. Accelerated activities

2722. Immobile nutrient in soil is:_________?
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A. N

B. Mg

C. P

D. None of the above

2723. Chlorophyll contain which mineral nutrient?
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A. Ca

B. Mg

C. P

D. S

2724. The popular varieties of dates produced in the province of Balochistan, Makran division are:
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A. Kahraba

B. Begum jangi

C. Mozwati

D. Both B & C
2725. The most suitable species for reclamation of sandy soils is:_________?
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A. Casuarina equiselifolia

B. Azadirachta indica

C. All of the above

D. Acacia spp

2726. Hen and chicken disorder is associated with__________ ?
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A. Tomato

B. Guava

C. Mango

D. Grapes
2727. The ventral tube on the first abdominal segment of a springtail:
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A. Ectoparasitoid

B. Embolium

C. Costa

D. Collophore
2728. The lower leaves turn yellow and in some crops they quickly start drying up as if suffering from shortage of water, stunted growth, leaves & fruits shedding & whole plant becomes yellow, are deficiency symptoms of:_________?
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A. Potash

B. Nitrogen

C. Calcium

D. Both a & c

2729. Which one of the following crops is not cultivated under dry land farming?
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A. All of the above

B. Ground nut

C. Jowar

D. Sugarcane
2730. The following types of check dams have been tried in Pakistan:
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A. Loose stone or wire-bound check dams

B. Cement & stone check dams

C. Brushwood check dams

D. All of the above
2731. Earliest method of plant breeding?
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A. Mutation

B. Hybridization

C. Selection

D. Introduction

2732. Young ones of camel and cattle is called: __________?
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A. Kid

B. Calf

C. Fawn

D. Lamb

2733. When seeds leaves the fruit or flower is termed as__________?
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A. Dormancy

B. Non of the Above

C. Dissemination

D. Quiescent

2734. Potassium nitrate is used in__________?
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A. Glass

B. Fertilizer

C. Medicine

D. Salt

2735. Most of the summer vegetables are_________?
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A. Biennial

B. Perennial

C. None of these

D. Annual
2736. The unit of a scale used to measure the level of acidity or alkalinity of chemicals is called:
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A. Pascal

B. Ec

C. pH

D. None of the above

2737. Crysanthemum is propagated by___________?
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A. Suckers

B. None

C. Corals

D. Corms

2738. Who is known as the father of Hybrid Rice?
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A. Yaun Longping

B. Yaun Pingpong

C. None of these

D. Zuhee yaun

2739. Which one of the following acid does not exists in gram leaves?
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A. Puric acid

B. Sulphuric acid

C. Olic acid

D. Both b & c
2740. The depth of irrigation water required for the full crop period is called_________?
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A. Delta of water

B. Crop water required

C. Water required

D. None of these

2741. What percentage of land is cultivable in the world?
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A. 11%

B. 12%

C. 10%

D. None of these

2742. __________ is gram-positive?
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A. Xanthomonas

B. Corynebacterium

C. Erwinia

D. Pseudomonas

2743. Sprinkler irrigation is suitable, where soil has:_________?
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A. Clayey texture

B. Loamy texture

C. Undulating topography

D. All of these
2744. These crops are planted in winter from October to December and harvested in summer from March to May is called______?
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A. Relay crops

B. Rabi crops

C. All of these

D. Kharif crops

2745. Plants which grow on sandy soils:_________?
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A. Chasmophytes

B. None of these

C. Lithophytes

D. Psammophytes
2746. The soil quality is always deteriorated by:_________?
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A. Erosion & pollution

B. Nutrient mining

C. Waterlogging & salinization

D. All of these
2747. The solid wastes generated in Pakistan are about: ___________?
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A. 65, 772 tonnes/day

B. 47,920 tonnes/day

C. 12250 tonnes/day

D. All of the above

2748. __________________ systems play a crucial role in increasing soil organic C storage and reducing net emissions of greenhouse gases in addition to soil erosion control:
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A. Engineering

B. Agroforestry

C. Cultivating

D. All of the above

2749. Pakistan has three storage reservoirs, tarbela, chashma & Mangla and __________ barrages:
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A. 16

B. 19

C. 17

D. 18

2750. Azotobacter fixes atmospheric nitrogen in the soil by:__________?
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A. Symbiotically

B. Can fix A & B

C. Non-symbiotically

D. None of these