Understanding the rapid success in higher plants.

What should be regarded as the single most significant structure leading to rapid success of the so called "higher plants"?

The fundamental rules of seed treatment.

What are the fundamental rules for seed treatment?

What would be the appearance of one potted plant placed in a dark area, and another placed in a light area for 4 days?

What would be the appearances of one potted plant placed in a dark area, and another placed in a light area for 4 days?

Nitrogen and growing rates.

What is the probable result of growing plants in soil with low or high nitrogen content instead of at different light levels?

Atmospheric Change

A. How would the composition of the earth's atmosphere change if green plants and other autotrophs disappeared? Explain why in term of your knowledge of photosynthesis. B. How would animal life be affected by this atmospheric change? Explain why in terms of your knowledge of cellular respiration.