PPSC Lecturer of Botany Past Paper

PPSC Lecturer of Botany Past Paper

⭐ The average internal temperature of human

body is 37 °C.

⭐ Vitamin-A is needed for the formation of a lightsensitive

pigment in the retina.

⭐ Blood is carried towards the heart by Veins.

⭐ Iron is essential for the formation of


Severe deficiency of Vitamin D results in rickets.

⭐ The average adult has a blood volume of about

5 liters.

⭐ People living in high altitudes (like mountains)

usually have a larger number of Red Blood Cells.

⭐ Carbohydrates are needed as a source of energy

for the vital activities of the body.

⭐ Haemodialysis means cleaning of blood.

⭐ Production of sweat and sebum is related with


⭐ The evaporative cooling in the respiratory tract

of dogs is called panting.

⭐ Bacteria cause disease that can be treated with


⭐ Most cell membranes are composed principally

of protein and lipids.

⭐ Normally, in the process of osmosis, the net

flow of water molecules into or out of the cell

depends upon differences in the concentration

of water molecules inside and outside the cell.

⭐ Sodium ions are “pumped” from a region of

lower concentration to a region of higher

concentration in the nerve cells of humans. This

process is an example of active transport.

⭐ Proteins are made from amino acids by the

process of dehydration synthesis.

⭐ Glucose is an organic compound found in most

⭐ About 70% of the body weight of a mammal is


⭐ On wound White Blood cells fight foreign

particles, like bacteria.

⭐ Carbon, oxygen, hydrogen and nitrogen are the

four most abundant elements in living cells.

⭐ Starch is converted into maltose by diastase.

⭐ Co-enzyme is often formed from protein.

⭐ Messenger RNA is formed in nucleus.

⭐ 1 Number of chromosomes is in E.coli.

⭐ Protein factory is ribosome.

1) The spores in bryophytic plant represent the first cell of the:

(a) Gametophytic generation

(b) Sporophytic generation

(c) Asexual generation

(d) All of these

(e) None of these

(2) Algal members of classes Euglenophyceae and chlorophyceae are similar in the:

(a) Cell wall structure

(b) Reserve food

(c) Pigment composition

(d) Structure of flagella

(e) None of these

(3) Crystocarp is a structure developed after fertilization in:

(a) Blue green algae

(b) Actinomycetes

(c) Bryophetes

(d) Red algae

(e) None of these

(4) Rice belongs to family:

(a) Malvaceae

(b) Fabiaceae

(c) Solonaceae

(d) Poaceae

(e) None of these

(5) Gametophyte of fern is called:

(a) Prothallus

(b) Protocorm

(c) Thallus

(d) Gametangia

(e) None of these

(6) The sieve elements are major component of:

(a) Cambium

(b) Apical meristem

(c) Xylem

(d) Phloem

(e) None of these

(7) Which one of these is a parasite:

(a) Sunflower

(b) Begonia

(c) Biden

(d) Brasica

(e) None of these

(8) Sporophytic generation is borne upon gametophyte and is dependent on it. This feature is present in:

(a) Cycas

(b) Adiantam

(c) Equisetum

(d) All of these

(e) None of these

(9) Double fertilization is a typical characteristic of:

(a) Algae

(b) Fungi

(c) Bryophytes

(d) Angiosperm

(e) All of these

(10) Marchantia reproduces vegetatively by:

(a) Apospory

(b) Gemma Cup

(c) Budding

(d) All of these

(e) None of these

(11) Plant cell wall is composed of:

(a) Cellulose

(b) Polypeptides

(c) Phospholipids

(d) Starch

(e) None of these

(12) Stele in which primary vascular tissues are arranged in discrete strands around a pit is called:

(a) Prostele

(b) Radial stele

(c) Centric stele

(d) Eustele

(e) None of these

(13) In which the following edible part is obtained from the Rhizome:

(a) Potato

(b) Ginger

(c) Sugar beet
(d) Onion
(e) None of these

(14) Fertilization within an unopened flower is called:
(a) Cleistogramy
(b) Cleistocary
(c) Isogamy
(d) Oogamy
(e) None of these

(15) Meiosis takes place during:

(a) Gamete formation
(b) Zygote formation
(c) Cambium formation
(d) All of these
(e) None of these