MCQ
Fruit and leaf drop at early stages can be prevented by the application of
- Aethylene
- ✓auxins
- Cgibberellic acid
- Dcytokinins.
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$(1)$ Carbohydrates are generally used as substrates for respiration.
$(2)$ Fatty acids first can degraded into acetyl $Co$ $A,$ which enter into the respiratory pathway.
$(3)$ In case of proteins, they are first broken down into amino acids which later converted in pyruvic acid and enter respiratory pathway
$ (4)$ The respiratory pathway is involved in both anabolism and catabolism.
$(5)$ Glycerol would enter the pathway after being converted to $PGAL. $
$1.$ Chromosomes cluster at opposite spindle poles
$2.$ Spindle fibres attach to kinetochores of chromosomes
$3.$ Nuclear envelope assembles around the chromosomes clusters.