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What is the difference between a synodic period and a sidereal period? What is the difference between a synodic month and a sidereal month?
Lunar synodic month ( 29.53 days) is longer than the sidereal month (27.32 days ). Synodic month is the period between two consecutive transits of the revolving-about-Sun heliocentric longitudinal plane...
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What is the difference between hot dark matter and cold dark matter? What difference does it make to cosmology?
Depending on how a particle's kinetic energy compares with its rest mass energy, particles are classified into: Non-relativistic: $E_k \lt\lt E_0$, Relativistic : $E_k \approx E_0$, Super-relativistic:...
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Plant cells have cell walls too. What do yeast cells lack that plant cells have?
Yeasts are heterotroph. They are unable to produce their food by . Yeast cells lack chloroplasts. Thank you
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A true breeding tall, purple flowered pea plant (TTPP) is crossed with a true breeding dwarf, white flowerd pea plant (ttpp). 1) What is the phenotype of the F1 Generation? 2) What is the genotype of the F1 Generation?
Gametes produced by TTPP will be TP and that of ttpp will be tp if we cross pollinate them TP * tp the F 1 generation will be a...
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During an experiment, a scientist crosses a pea plant that has purple flowers with a pea plant that has white flowers. The plants that result from this cross in the F1 generation have both purple and white flowers. What can the scientist conclude?
Let's say the dominant colour is purple (P) and the recessive colour is white (w). The purple plant may be $PP or Pw$ The white plant can only be $ww$...
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When a cutting from a plant sprouts roots and yields a new, independent plant, what process has occurred?
from Wiki Vegetative reproduction (vegetative propagation, vegetative cloning ) is • any form of asexual reproduction occurring in plants • in which a new plant grows...
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A plant's cell wall is made of cellulose fibers. What is the purpose of a plant's cell wall?
Plants do not have bones like some animals do, so they will topple over without bones and a backbone. This is where the role of the cell wall comes in....
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Why does cutting off the tip of the main stem ofa plant often result in the plant growing bushier?
The phyto hormone i.e., auxins are produced at the apex of the plants. This hormone is responsible for apical dominance by checking the growth of the lateral branches.. The pruning...
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Why do plant cells that transport water against the force of gravity contain many more mitochondria than other plant cells do?
The process of transporting water against gravity is called , so called because it requires energy to occur (as opposed to passive transport which occurs naturally). Now, the molecule which...
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Can the plant's cell wall burst if it is too full of water molecules? If so, why, how, and what would the plant and an individual cell look like? Also, is that why cut flowers wilt and die?
Under normal circumstances the cell wall will prevent too much water from entering. When the wall is weakened through the use of enzymes or freezing. The cut flowers get weak...
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