Answer:
b. chloroplast
Explanation:
Chloroplasts are the double membrane-bound organelles that serve as the site for photosynthesis in eukaryotes. Chloroplasts are the organelles where eukaryotic autotrophs synthesize the organic nutrients by the process of photosynthesis. According to the given information, the first eukaryotic cells were heterotrophs as they derived energy by available organic compounds. They did not synthesize the organic nutrients to use them as fuel. Chloroplasts are not present in heterotrophic organisms such as animals. Therefore, chloroplasts are most likely to have appeared last in the eukaryotic cells.
Answer:
eight haploid
Explanation:
Megaspore (macrospore) is a type of spore present in heterosporous (production of spores of two different sizes and sexes) plants.
During megagametogenesis, a single nucleus undergoes mitosis three times producing an eight-nucleate.
<span>It is the link between all organisms on earth, binding each into an interdependant ecosystem, in which all species have their role. It is the web of life. The Earth's natural assets are made up of plants, animals, land, water, the atmosphere and humans. If that didn't help sorry</span>
Universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago.
