ECONOMIC BOTANY And OTHERS (Part-I)

1. Vegetables spoil quickly because they contain more- [S.S.C. Online C.P.O. S.I. 5.06.2016 (Shift-II)]

(a) sugars
(b) water
(c) Vitamins
(d) enzymes

Correct Answer: (b) water

Solution:water
High water content in vegetables provides a suitable environment for microbial growth and enzymatic activity, both of which contribute to spoilage.

2. Early blight is a common disease of which of the following? [S.S.C. Online C.P.O. S.I. (T-1) 3.07.2017 (Shift-II)]

(a) Potato
(b) Ginger
(c) Cabbage
(d) Cauliflower

Correct Answer: (a) Potato

Solution:Potato
Early blight is a common fungal disease primarily affecting potatoes and tomatoes.

3. The 'solid waste' is also known as- [S.S.C. Online Graduate Level (T-1) 10.09.2016 (Shift-III)]

(a) Sedge
(b) Toxic waste
(c) Sludge
(d) Scrubber

Correct Answer: (c) Sludge

Solution: Sludge
"Solid waste" is a broad term, but in many contexts, especially in wastewater treatment, the solid residue is referred to as sludge.

4. Symbiotic Bacteria responsible for the fixation of atmospheric nitrogen are present in- [S.S.C. Online Graduate Level (T-I) 11.09.2016 (Shift-I)]

(a) peas
(b) wheat
(c) corn
(d) oats

Correct Answer: (a) peas

Solution:peas
Peas, like other legumes, have root nodules that house symbiotic bacteria (Rhizobium) responsible for nitrogen fixation.

5. In water treatment plant, use of chloramines ensures- [S.S.C. Online Graduate Level (T-I) 11.09.2016 (Shift-I)]

(a) Taste and odour control
(b) Weed control in reservoirs
(c) Disinfection
(d) Removal of permanent hardness

Correct Answer: (c) Disinfection

Solution: Disinfection
Chloramines are used in water treatment as a disinfectant to kill bacteria and other microorganisms.

6. The bare ground between plants is covered with a layer of organic matter like straw. It helps to retain soil moisture. Identify the process. [S.S.C. Online MTS (T-I) 14.08.2019 (Shift-III)]

(a) Mulching
(b) Contour Building
(c) Contour Ploughing
(d) Soil Mixing

Correct Answer: (a) Mulching

Solution: Mulching
Mulching is the process of covering the bare ground with organic matter to retain soil moisture, suppress weeds, and improve soil health.

7. Which of the following uses the spawn mechanism to duplicate itself? [S.S.C. Online Graduate Level (T-I) 1.09.2016 (Shift-III)]

(a) Trojan horse
(b) Worm
(c) Keystroke logger
(d) Logic bomb

Correct Answer: (b) Worm

Solution:Worm
A worm is a type of malware that replicates itself to spread to other computers, often without human intervention (spawn mechanism).

8. In a rainforest, the vegetation that grows under the shade of a canopy is known as- [S.S.C. Online Graduate Level (T-I) 6.09.2016 (Shift-I)]

(a) Crown
(b) Canopy
(c) Understorey
(d) Forest floor

Correct Answer: (c) Understorey

Solution:The vegetation that grows under the canopy of a tree in a rainforest is called 'Understorey'. It is the habitat of many birds, snakes, lizards, predatory animals, insects, etc. This is the upper part of the forest floor.

9. Which one of the following is an insectivorous plant? [S.S.C. Online CHSL (T-1) 15.01.2017 (Shift-III)]

(a) Utricularia
(b) Sequoia Gigantia
(c) Nostoc
(d) Bryophyta

Correct Answer: (a) Utricularia

Solution:Utricularia is an insectivorous aquatic plant, also known as bladderworts. These plants make up for the lack of nitrogen by digesting insects.

10. The auxiliary buds [S.S.C. Online CHSL (T-I) 23.01.2017 (Shift-I)]

(a) Grow endogenously from the pericycle
(b) Arise endogenously from the main growing point
(c) Is an embryonic shoot located in the axil of a leaf
(d) Arise exogenously from the epidermis

Correct Answer: (c) Is an embryonic shoot located in the axil of a leaf

Solution:An auxiliary bud (or axillary bud) is a bud that develops in the axil of a leaf, which is the angle between the upper side of the leaf and the stem. It has the potential to grow into a new branch or flower.