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WorksheetsSA-2023-24 Biology
Total questions: 10
Worksheet time: 5mins
Which of the following parts of sperm is filled with an enzyme that help in fertilising the ovum?
Acrosome
Plasma membrane
Neck
Tail
Name the vascular system responsible for the increase of girth of the tree.
intercalary meristem
Axial meristem
cambium
xylem and phloem
When pollination takes place between the flowers of the same plant ,it is termed as ______
cross -pollination
geitonogamy
Artificial pollination
Autogamy
Which of the following body function will suffer due to decreased secretion of melatonin?
Body temperature
sleep -wake cycle
secretion of digestive juices
Production of antibodies
Which of the plants reproduce through fragmentation?
Fern
Spirogyra
Ginger
Bryophyllum
Refer to the following statements and select the correct statement regarding the formation of a hypertonic solution.
A hypertonic solution is formed when the external solution is more dilute .
A hypertonic solution is formed when there are no solutes in the external solution .
A hypertonic solution is formed when both internal and external solutions are balanced.
A hypertonic solution is formed when the external solution is more concentrated
Refer to the following assertion and reason and choose the appropriate option for it.
Assertion :-The hormone adrenaline is secreted in a person experiencing a roller coaster ride .
Reason :-Adrenaline is rapidly secreted from the atrial wall of the heart during an emergency situation.
Both assertion and reason are true and reason is the correct explanation of assertion
Both assertion and reason are true but reason is not the correct explanation of assertion .
Assertion is true and reason is false
Both assertion and reason are true
When swelled-up almonds are placed in a concentrated sugar solution , they will _______
first ,shrink and then swell
shrink
swell
remain the same size
On which properties of water do the ascent of sap depend ?
Cohesion
Adhesion
osmotic pressure
cohesion and adhesion
Which of the following is the only living component of xylem tissue ?
Xylem fibres
Tracheids
Xylem parenchyma
Xylem vessels
