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-A kind of fertilization in which the male nucleus decides into two male nuclei. One of which fertilizes the functional egg
forming a zygote while the other fuses with the polar nuclei to form a primary endosperm nucleus.
sharon kalunda answered the question on May 27, 2019 at 07:03
- Name two kinds of nuclei found in a mature pollen grain.(Solved)
Name two kinds of nuclei found in a mature pollen grain.
Date posted: May 27, 2019. Answers (1)
- Why is excretion of nitrogenous wastes more of a problem to animals than plants.(Solved)
Why is excretion of nitrogenous wastes more of a problem to animals than plants.
Date posted: May 27, 2019. Answers (1)
- State the reason behind the addition of iodine solution, to an onion epidermis on a slide while being observed on alight
microscope.(Solved)
State the reason behind the addition of iodine solution, to an onion epidermis on a slide while being observed on alight
microscope.
Date posted: May 27, 2019. Answers (1)
- Name the hormone responsible for:
a) Conversion of glycogen to glucouse
b) Regulation of the amount of water in the blood(Solved)
Name the hormone responsible for:
a) Conversion of glycogen to glucouse
b) Regulation of the amount of water in the blood
Date posted: May 27, 2019. Answers (1)
- Give the genotype of a male who could be born haemophiliac.(Solved)
Give the genotype of a male who could be born haemophiliac.
Date posted: May 27, 2019. Answers (1)
- Give two possible ways of establishing the genotype of an organism whose genotype is unknown.(Solved)
Give two possible ways of establishing the genotype of an organism whose genotype is unknown.
Date posted: May 27, 2019. Answers (1)
- Name the type of response shown by:
a) Leaves of mimosa pudica when they fold after being touched.
b) Euglena when it swims towards the source...(Solved)
Name the type of response shown by:
a) Leaves of mimosa pudica when they fold after being touched.
b) Euglena when it swims towards the source of light.
c) Maggots moving from the lit side of a boiling tube to the side painted black.
Date posted: May 27, 2019. Answers (1)
- Study the diagram shown below of the anterior view of a lumbar vertebra of a mammal.
a) Name the parts labelled A and B
b) State...(Solved)
Study the diagram shown below of the anterior view of a lumbar vertebra of a mammal.
a) Name the parts labelled A and B
b) State the function of part C
Date posted: May 27, 2019. Answers (1)
- An organism has the following characteristics:
_ Four pairs of wings
_ Cephalothorax and abdomen
_ Absence of antennae
_ Presence of a pair of chelicerae
Name the phylum and...(Solved)
An organism has the following characteristics:
_ Four pairs of wings
_ Cephalothorax and abdomen
_ Absence of antennae
_ Presence of a pair of chelicerae
Name the phylum and class that the organism belongs to?
Phylum
Class
Date posted: May 27, 2019. Answers (1)
- State the kingdom to which chladydomonas belong.(Solved)
State the kingdom to which chladydomonas belong.
Date posted: May 27, 2019. Answers (1)
- Identify two adaptations of vertebrae neurone that affects the speed of impulse transmission.(Solved)
Identify two adaptations of vertebrae neurone that affects the speed of impulse transmission.
Date posted: May 27, 2019. Answers (1)
- Two potted plants A and B were placed in the dark for two days. Each was then placed in an air tight bell jar as...(Solved)
Two potted plants A and B were placed in the dark for two days. Each was then placed in an air tight bell jar as follows then transferred to light for four hours. Each plant was then tested for starch.
a) why were the plants put in the dark place for two days.
b) what was the result of the starch test in plant B.Expain your answer.
Date posted: May 27, 2019. Answers (1)
- Name the polysaccharides found in the following structures.
a) Exoskeleton
b) Xylem vessels(Solved)
Name the polysaccharides found in the following structures.
a) Exoskeleton
b) Xylem vessels
Date posted: May 27, 2019. Answers (1)
- Name two enzymes and one ion metal that are needed in the blood clotting process.(Solved)
Name two enzymes and one ion metal that are needed in the blood clotting process.
Date posted: May 27, 2019. Answers (1)
- What is the role of Cotyledons in a germinating seed.(Solved)
What is the role of Cotyledons in a germinating seed.
Date posted: May 27, 2019. Answers (1)
- A student set up an experiment as shown in the diagram below.
(i)What was being investigated in the experiment?
ii.Draw a diagram to indicate the expected...(Solved)
A student set up an experiment as shown in the diagram below.
(i)What was being investigated in the experiment?
ii.Draw a diagram to indicate the expected results of the experiment after three days.
iii.Why was it necessary to have wet cotton wool in the container.
Date posted: May 27, 2019. Answers (1)
- Identify the structure of the cell that perform the following functions:
a) Synthesize ribosomes
b) Regulate exchange of substance in and out of the nuclear....(Solved)
Identify the structure of the cell that perform the following functions:
a) Synthesize ribosomes
b) Regulate exchange of substance in and out of the nuclear.
c) Division of cells to form new ones.
Date posted: May 27, 2019. Answers (1)
- Name one function of
a) Progesterone
b) Luteinizing hormone(Solved)
Name one function of
a) Progesterone
b) Luteinizing hormone
Date posted: May 27, 2019. Answers (1)
- A certain animal has no incisor, no canines, 6 premolars and 6 molar in its upper jaw. In the lower jaw there are 6 incisors,...(Solved)
A certain animal has no incisor, no canines, 6 premolars and 6 molar in its upper jaw. In the lower jaw there are 6 incisors, 2 canines, 6 premolars and 6 molars. Write its dental formula
Date posted: May 27, 2019. Answers (1)
- Explain what leads to struggle for existence in organisms.(Solved)
Explain what leads to struggle for existence in organisms.
Date posted: May 27, 2019. Answers (1)