Which type of plant only lives about a year? annual nonvascular perennial vascular

Annual

Explanation:

Plants life cycle can be divided into 3 main types: Annual, Biannual and perennial.

The plants that that live for only a year is known as annual plants. They complete their life cycle in a year only.

The plants that complete their life cycle by growing twice in a year is known as biannual plants, and perennial appears very spring and summer and die in every autumn and winter.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.

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