PMB 2022 Exam 2
Interveinal chlorosis appearing in young leaves indicates a deficiency in - ANS-iron or
manganese
General chlorosis indicates a deficiency of - ANS-nitrogen or sulfur
stunted plants with anthocyanin accumulation in older leaves indicates a deficiency in -
ANS-phosphorus
A plant response to a directional signal such as gravity, light or touch that results in
oriented growth is called - ANS-tropism
Phytochrome is a plant red light receptor that is photoconvertible between two forms Pr
and Pfr. Phytochrome is a - ANS-protein
Red light produces germination. To test if phytochrome is involved, test the seeds with -
ANS-red light followed by far red light
Phytochrome is used by plants to sense if they are being shaded by other plants. The
R/FR ratio is detected by phytochrome. The R/FR ratio decreases in the shade but
why? - ANS-because leaves absorb red light
Two blue light receptors in plants are - ANS-phototropin and cryptochrome
The hormone that causes leaf abscission is - ANS-ethylene
When an oat coleoptile is exposed to blue light from one side, the hormone
____________ accumulates on the opposite side of the coleoptile and inhibits cell
elongation. That makes the coleoptile grow towards the light. - ANS-auxin
The hormone that controls plants response to gravity (gravitropism) is called -
ANS-auxin
Inhibition of lateral buds by the shoot apical meristem is called apical dominance. The
hormone that is responsible for apical dominance is called - ANS-auxin
A hormone that promotes seed germination is - ANS-gibberellin
Interveinal chlorosis appearing in young leaves indicates a deficiency in - ANS-iron or
manganese
General chlorosis indicates a deficiency of - ANS-nitrogen or sulfur
stunted plants with anthocyanin accumulation in older leaves indicates a deficiency in -
ANS-phosphorus
A plant response to a directional signal such as gravity, light or touch that results in
oriented growth is called - ANS-tropism
Phytochrome is a plant red light receptor that is photoconvertible between two forms Pr
and Pfr. Phytochrome is a - ANS-protein
Red light produces germination. To test if phytochrome is involved, test the seeds with -
ANS-red light followed by far red light
Phytochrome is used by plants to sense if they are being shaded by other plants. The
R/FR ratio is detected by phytochrome. The R/FR ratio decreases in the shade but
why? - ANS-because leaves absorb red light
Two blue light receptors in plants are - ANS-phototropin and cryptochrome
The hormone that causes leaf abscission is - ANS-ethylene
When an oat coleoptile is exposed to blue light from one side, the hormone
____________ accumulates on the opposite side of the coleoptile and inhibits cell
elongation. That makes the coleoptile grow towards the light. - ANS-auxin
The hormone that controls plants response to gravity (gravitropism) is called -
ANS-auxin
Inhibition of lateral buds by the shoot apical meristem is called apical dominance. The
hormone that is responsible for apical dominance is called - ANS-auxin
A hormone that promotes seed germination is - ANS-gibberellin
