This set of Agriculture Multiple Choice Questions & Answers (MCQs) focuses on “Classification of Weed”.
1. The term weed was firstly used by _________
a) JethroTull
b) Gerrad
c) Archya
d) Brady
View Answer
Explanation: The term weed was first used by JethroTull. Weed is such undesirable plant grown in association with crop which snatches major parts of nutrients, water, light, place and CO2 available to the crop.
2. Which of the following is not a property of obligate weed?
a) Such weeds are grown in association with man and his agriculture
b) Never found in Wild form
c) Chenopodium
d) Argemonemexicana
View Answer
Explanation: Argemonemexicana is a facultative weed, while all others properties are true for Obligate weed.
3. Which of the following is a true example of Facultative weed?
a) Euphorbia hirta
b) Anagallis
c) Datura
d) Cuscuta
View Answer
Explanation: Euphorbia hirta is an example of facultative weed. Such weeds are grown both as wild and in cultivated habitats.
4. Which of the following is not under dependence on host classification?
a) Semi-root parasite
b) Semi-stem parasite
c) Total stem parasite
d) Total leaf parasite
View Answer
Explanation: The last type of weed on basis of Dependence in host is Total Root Parasite or Holo root parasite e.g. Orobanche.
5. Birdvine is other name for ____________
a) Striga
b) Orobanche
c) Loranthus
d) Cuscuta
View Answer
Explanation: Birdvine is other name for Loranthus. Loranthus is a Semi stem parasite.
6. Which of the following is not a property of Grasses type of weed?
a) Triangle stem
b) Hollow stem having nodes and internodes
c) Leaf emerges from the nodes
d) Fibrous roots
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Explanation: The stem of grassy weed is cylindrical type rather than triangle. It is hollow, having nodes and internodes. Fibrous roots and belong to Graminae family.
7. Which of the following is not an example of grassy weeds?
a) Echinochloa
b) Phalaris
c) Cyanodon
d) Cyperus
View Answer
Explanation: Cyperus is not an example of grassy weeds while Echinochloa, Phalaris and Cyanodon are typical grassy weeds. Most of the weeds are grassy weeds.
8. Which of the following is not a property of sedges?
a) Triangular stem
b) No node
c) Branches present
d) Cyperaceous
View Answer
Explanation: Branches are not present in the sedges type of weeds. Though the stem is triangular, no nodes are present and all the sedges belong to Cyperceae.
9. Chenopodium album is an example of ___________
a) Broad leaf weed
b) Sedges weed
c) Grasses weed
d) Thorny weed
View Answer
Explanation: Chenopodium album is an example of Broad leaf weeds. Other name for Chenopodium album is “Bathua”.
Sanfoundry Global Education & Learning Series – Agriculture.
To practice all areas of Agriculture, here is complete set of Multiple Choice Questions and Answers.
