Answer:
Pteridophytes are vascular plants but they do not produce flowers and seeds which mean their source of reproduction is unknown or hidden.
On the contrary, Spermatophytes as the name indicates, are seed bearing plants. They produced seeds and flowers. Examples are flowering plants, cactus, leather flower, buttercup and may more.
Explanation:
Carbo dioxide, water and sun's energy comes fron the outside.... energy and Oxygen molecule are produced
Answer:
a
Explanation:
this is because it is sharing in the food that is meant for the organism
“Neuron” is another name for a nerve cell.
Around 40 weeks is when it occurs
