VALUE POINTS: CLASS IX MIDTERM

Sequel to previous post.

marking scheme/value points for the sample paper uploaded earlier:

Q.1   A. Lysosome, B. Golgi Complex, C. Plastid / Mitochondria (any 2) ½×1

Q.2  Exosmosis                                                                                            1

Q.3  Conduction & Xylem                                                                           ½×1

Q.4  Striated/Skeletal Muscle                                                                    1

Q.5  In AIDS patients immune system is not working or weakened.    1

Q.6  Mycelium, Large number of spores                                                   ½×1

Q.7  A. Symptoms, b. acute & chronic, c. bacteria, infectious & defieicency ½×6

Q.8  Fungi, to kill bacteria

Q.9  A. Fungi (heterotrophic, cell wall chitin), Plantae (autotrophic, cell wall cytoplasm)              1×3

B. Monocot (single cotyledon, fibrous root, parallel venation), dicot ( 2 cotyledons, tap root, reticulate venation) – any 2           

C. Porifera (cell level of organisation, non motile), Coelentrata (tissue level of organisation, motile)

D. Piesces (aquatic, streamlined body, fins, gills), amphibians (both terrestrial & aquatic, not streamlined body, legs, lungs as well as gills) – any 2

OR

Whittaker’s 5 kingdom classification                                                                                                       3

Q.10                      3 differences between Prokaryotic & eukaryotic cells & diagram of both.                       5

OR

Parenchyma, Collenchyma & Sclerenchyma (2 differences & diagram)

Q.11                      Glycerine – to prevent from drying; Safranin – to stain                                                    1+1

Q.12                      Cockroach (jointed legs, segmented body, chitinous exoskeleton) – (any 2)    1+2

CLASS 9 MIDTERM QUESTION PAPER

Q.1  Name the cell organelle that:                         1/2×2                                                                                                       

a.       Protects cells from infections & toxins.

b.       Synthesizes complex sugars from glucose.  OR

c.       Contains DNA (other than nucleus)

Q.2   While cooking vegetables adding of salt causes the vegetables to release water, thus allowing vegetables to be cooked. Which process is responsible for release of water due to addition of salt?                      1

Q.3   A white flower was kept in red coloured water overnight. By morning the flower turned red. Which process & which tissue is responsible for the red colour of flower?                                                      1

Q.4   An athlete increases his speed as he closes on to the finishing line. Which muscles help him increase his running speed?                                                                                                                                         1

Q.5  Mucor infection in lungs leads to nasal congestion, wheezing throat irritation or coughing in healthy individuals. However, in AIDS patients it can be fatal. Why?                                                                          1

Q.6   2 characteristic behavioural features of fungi are: they are heterotrophic & they are non motile. What special structural characteristics have they developed to                                                                          1/2×2

a.       Obtain food

b.       Ensure survival

Q.7    Fill in the blanks:                                                                                                                                1/2×6

a.       Signs of disease such as fever, vomiting are known as its __________________

b.       Diseases that last for a short period are known as _____________, and those that persist for long periods are known as ________________

c.       Tuberculosis effects our lungs and is caused due to a ___________ while common cold causes cough is caused due to virus.

d.       Diseases caused due to microbes are known as ______________ disease, while diseases caused due to lack of essential nutrients in body are known as __________________ disease.

Q.8  Which organisms are the source of antibiotics? What is their use?                                                    1+1

Q.9  Differentiate (2 differences) between any 3 of the following groups of organisms:                               1×3

a.       Fungi & Plantae

b.       Monocotyledon & Dicotyledon

c.       Porifera & Coelentrata

d.       Pisces & Amphibia

OR

 What is the most popular method of classification of living organisms? Show with the help of flow chart? Name the scientist responsible for this classification.                                                                                  3

Q.10          You are asked to study cells from curd & plant leaf. What differences would you observe in the cells from these two sources (3 differences). Explain with the help of diagrams.                                       5

OR

Tabulate 2 differences between the three types of permanent tissues. Draw diagrams to show each type.

Section B

Q.11          Onion peel cells are kept in glycerine and treated with safranin before viewing under a microscope. Why are glycerine & safranin used?                                                                                                1

Q.12          Identify the organism & give its 2 distinctive features.                                 1+2

BOARD PREPARATION: Practise Question Paper