SUMMATIVE ASSESSMENT TEST-1
(. Biology. ) 9 class. (40marks)
ANSWER ANY FOUR OF THE FOLLOWING (4×5=20marks)
1) How can you observe the nucleus in human cheek cells?
2) Write the differences between xylem and phloem?
3) Write an activity of finding the blood groups?
4)How can you prove the osmosis with potato osmometer?
5)Which cell organelle is responsible for photosynthesis.explain?
6) Write a note on meristematic tissue?
ANSWER ALL THE FOLLOWING (7×2=14 marks)
7) Write the differences between plant and animal cell?
8) Draw neuron and labell it.?
9)Who are called universal donars and why?
10) Write about parenchyma?
11) Write the daily life example s of osmosis?
12) What are called suicidal bags of a cell. Why.?
13)What is cartilage ? Write about it?
ANSWER THE FOLLOWING (6×1=6 marks )
14)-------- is called power House of a cell.
15) Gaseous exchange occurs through---------- in plants.
16) The tissue that stores fat is------------.
17)The smell from the flowers spreads in surroundings through------------- process.
18) Nucleus was discovered by--------------.
19)The branch deals with the study of blood is------------.
.( The end).............
Answers
Answer:
10.Parenchyma are thin-walled round or oval shaped cells having spaces between them. It is present in stem, leaves, flowers, fruits and seeds. Most of them contain leucoplast and store food. Chloroplast containing parenchyma is called chlorenchyma and deal with photosynthesis.
6.Meristematic tissues, or simply meristems, are tissues in which the cells remain forever young and divide actively throughout the life of the plant. When a meristematic cell divides in two, the new cell that remains in the meristem is called an initial, the other the derivative.
3.In order to determine your blood type, a lab technician will mix your blood sample with antibodies that attack types A and B blood to see how it reacts. If your blood cells clump together when mixed with antibodies against type A blood, for example, you have type B blood.
13.Cartilage is a resilient and smooth elastic tissue, rubber-like padding that covers and protects the ends of long bones at the joints and nerves, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components.
Explanation:
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