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Byju's Answer
Standard XII
Biology
Entomophily
Choose the in...
Question

Choose the incorrect statement regarding herbarium.

A
Dried specimens are poisoned by using DDT
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B
The collections are kept inside metallic vasculum
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C
Herbarium sheet is 42×29cm
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D
It is used for alpha taxonomic research
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E
None of the above
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Solution

The correct option is E None of the above
  • Poisoning Antifungal (dipping in 2% ) and pesticidal (DDT) treatment of the dried specimen is done before keeping them inside metallic vasculum.
  • One can prepare herbarium sheets by cutting papers of size 29x 42cm.
  • Yes, herbarium sheets are used as a tool for alpha taxonomic research.
So the correct answer is option E.


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Q. Study the following statements regarding the preparation of herbarium sheets:
I. Plants should be collected in the flowering stage.
II. Every detail regarding the plant such as locality, ecological conditions, plants vegetative and floral characters, etc should be noted.
III. Plants are evenly pressed by unfolding a plant part between blotting papers (or newspapers) with the help of plant presser.
IV. Blotting paper need not be changed until plants get dried.
V. After drying, the plant's specimen is carefully mounted/pasted on the herbarium sheets.
VI. The herbarium sheet is labeled on the lower right hand corner representing the number of plant specimen, date of collection, etc.
Which of the above statement(s) is/are incorrect?

Q. Which of the following chemicals is used for poisoning the specimens in herbarium technique?
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Q. Which of the following statements is/are incorrect regarding the No Confidence Motion?

Choose the correct answer using the codes given below:


  1. 1 and 2 only
  2. 1, 2 and 3
  3. 3 only
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Which of the following taxonomical aids is being described by the given statements (i-iv) ?

i. They are generally established in educational institutes.

ii. They have collections of preserved plant and animal specimens for study and reference.

iii. Insects are preserved in boxes after collecting, killing and pinning.

iv. They often have collections of skeletons of animals too.


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