Home
Class 8
BIOLOGY
Spots appear on leaves because of...

Spots appear on leaves because of

A

Virus

B

Bacteria

C

Fungi

D

Worms

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • PRODUCTION OF FOOD FROM PLANTS

    NCERT TELUGU|Exercise Think and discuss|6 Videos
  • PRODUCTION OF FOOD FROM PLANTS

    NCERT TELUGU|Exercise Improve your learning|22 Videos
  • PRODUCTION OF FOOD FROM PLANTS

    NCERT TELUGU|Exercise Improve your learning|22 Videos
  • PRODUCTION OF FOOD FROM ANIMALS

    NCERT TELUGU|Exercise Improve your learning |16 Videos
  • REACHING THE AGE OF ADOLESCENCE

    NCERT TELUGU|Exercise Improve your learning|17 Videos

Similar Questions

Explore conceptually related problems

Do red spots appear on the leaves of flowers of any of the plants?

Rising and setting of the sum appears to be reddish because of

Why did red spots appear on the steam or flower?

Amines are less reactive in substitution reactions. Their reactivity is much lesser than alcohols and alkylflourides towards substitution. Protonation of the amino group makes it a better leaving group, but not nearly as good a leaving group as a protonated alcohol. Protonated amino groups cannot be displaced by OH^(-) because it would react immediately with the acidic hydrogen which would convert it in to a poor nucleophile. The leaving group in quartenary ammonium ion has about the same leaving tendency as a protonated amino group but does not have acidic hydrogen. The reaction of a quartenary ammonium ion with hydroxide ion is known as Hoffmann elimination reaction. The leaving group is tertiary amine. Since a tertiary amine is only a moderately good leaving group, the reaction requires heat. The carbon to which the tertiary amine is attached is designated as alpha carbon. When the hydroxide ion starts to remove a beta H from a quartenary ammonium ion, the leaving group does not immediately start to leave because a tertiary amine is not a good leaving group. As a result, a partial negative charge builds up on the carbon from which the proton is removed. The compounds 'C' in question number 31 on heating with moist silver oxide gives

Leaves appear green because ____________.

Collect powdery substance of the spots on leaves and observe under microscope. Write down what you observed.

“Seed leaves” are –

If a die is rolled twice and the sum of the numbers appearing on them is observed to be 6, then the probability that the number 1 appears atleast once on them is