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How do biologist think that ancient green algae were the ancestors of today's plants?
The chloroplasts, probably. All green plants have tiny green things inside their cells called chloroplasts. This is where photosynthesis takes place. Like mitochondria, the chloroplasts also contain their own DNA. This can be decoded and compared to the chloroplasts of modern, land living plants.
Algae that tries to live on land faces many of the same problems animals like fish do, namely gravity and moisture. Plants solved both problems by developing a series of hollow tubes which ran through the plant's body. This was a way to move water around, since it could no onger simply soak into the plant all around it underwater. The tubes also could be reinforced, allowing the plant to grow upright. This was important because plants compete with one another for sunshine. The tallest plant gets the most sunshine. Reproduction of course was complicated by the lack of water. Algae reproduce with eggs and sperm which swim in the water. In air, plants first developed spores with moisture proof walls. The spores landed in a moist spot and germinated. Millions of years later, plants developed seeds. Unlike spores, seeds are complete plants in embryonic form. Spores are just single cells. Seed plants also deleloped pollen. This is equivalent to sprem, but can be dried out completely and carried either by the wind or by insects. Land plants formed many symbiotic relationships with animals in order to increase their reproductive success.
What else can I help you with?
Why do biologists think that ancient green algae were the ancestors of todays plants?
Biologists believe ancient green algae were the ancestors of today's plants because they share similar characteristics, such as photosynthetic pigments and cell wall composition. Fossil evidence also supports the evolutionary link between green algae and plants. Additionally, genetic studies have revealed a close relationship between the two groups.
What innovation in angiosperm led to the production of seeds covered by fruit?
To cope with adverse atmospheric conditions is different seasons of the year Angiospermic plants developed seed inside the fruit for its dispersal and resting period during adverse conditions. That is why these are predominant plants on todays flora of the world.
Why do plants produce chemicals?
Some species of plants contain the base chemicals for many of the product on todays medicine shelves. An example is the presence of aspirin in the Willow tree. Before aspirin was synthesised artificially people used to chew on willow bark to remedy headaches. Many plants are crushed and the juices extracted through process such as centrifugation and filtration. The products can then be put into capsules and taken as medicine. Hope this helps
What impact did Marie curie have on todays world?
She helped with the development of x-rays.
What is todays forecast of highs and lows?
It is highs 37 and low 28hope it helped:)
What is ancestors of todays goldfish?
The carp
Who are the ancestors of todays housecats?
All cats! They all contributed to domestics.
Why do biologists think that ancient green algae were the ancestors of todays plants?
Biologists believe ancient green algae were the ancestors of today's plants because they share similar characteristics, such as photosynthetic pigments and cell wall composition. Fossil evidence also supports the evolutionary link between green algae and plants. Additionally, genetic studies have revealed a close relationship between the two groups.
What affects did greek government have on todays government?
Ancient Greeks gave their citizens a right to vote.
How did ancient Greeks influence on todays fashion?
Gladiator sandals were very poopular in summer of 2010!
What is 748 in roman numerals?
Nowadays it is DCCXLVIII but the ancient Romans probably wrote it out differently to todays notation.
What are three ways that ancient Greece culture is reflected in todays society?
olympics. architecture. politics( senate)
What is 8.11.1991 in Roman Numerals?
In todays modern notation of Roman numerals: VIII-XI-MCMXCI Note that the ancient Romans would have probably wrote out the equivalent of 1991 quite differently to that of todays notation.
What is the roman numeral for 3842?
In todays modern notation 3842 is MMMDCCCXLII but the ancient Romans notated it quite differently
How do you write 114 as a roman numeral?
In todays usage of Roman numerals it is CXIV but the ancient Romans wrote it out differently
What is 74 in roman numbers?
In todays terms 74 is LXXIV but the ancient Romans would have wrote it out quite differently
What is CXCVI?
In todays modern configuration of Roman numerals they represent 196 but the ancient Romans would have wrote them out quite differently.
