Which best describes the different features of plant life cycles?
a spore is a diploid cell that is produced by mitosis.
a zygote is a diploid cell that is produced by fertilization.
a spore is a haploid cell that is produced by fertilization.
a zygote is a haploid cell that is produced by meiosis.

A zygote is a diploid cell that is produced by fertilization.

Explanation:

Plants exhibit alternation of two generations. The sporophyte is the dominant generation in higher plants which form haploid megaspore and microspore by meiosis. Megaspore and microspore represent the first cell of female and male gametophyte respectively. Megaspore develops into embryo sac which bear egg while microspore carries male gametes. Fusion of egg cell with male gamete form diploid zygote and the process is called as fertilization.

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

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