1
which of the following represent the production and distribution lines in the plant respectively?
a) leaves & xylem tissues
b) leaves & phloem tissues
c) phloem tissues & leaves
d) xylem tissues & phloem tissues
b) leaves & phloem tissues
The blood corpuscles and blood platelets in the human represent ------ of blood volume.
a) 10%
b) 46%
c) 54%
d) 90%
b) 46%
As a result of an injury in the gall bladder of a person, it had been removed surgically, which of the following processes can be affected by this?
a) the removal of amino groups of proteins
b) the digestion of carbohydrates
c) the breaking down of peptide bonds of proteins
d) the digestion of fats
d) the digestion of fats
Which of the following tissues is present in the plant stem and not present in the leaf?
a) xylem
b) phloem
c) cambium
d) epidermis
c) cambium
Which of the following is considered from the characteristics of blood vessels that connect between the artery and the vein?
a) they contain valves
b) their wall consists of several cellular layers
c) their wall consists of connective tissue
d) their wall contains tiny pores
d) their wall contains tiny pores
All the following blood vessels are connected with the right side of the heart, except the ---
a) superior vena cava
b) inferior vena cava
c) pulmonary vein
d) pulmonary artery
c) pulmonary vein
Which of the following structures doesn't have a supporting function in the plant?
a) parenchyma
b) collenchyma
c) xylem tissues
d) pericycle
a) parenchyma
Which of the following blood vessels contains the highest level of O2 and the lowest level of CO2?
a) aorta
b) pulmonary artery
c) superior vena cava
d) pulmonary veins
d) pulmonary veins
What is the type of food that can be digested in both acidic and basic media?
a) potatoes
b) meat
c) butter
d) rice
b) meat
All the following don't have the ability to divide, except the -----
a) tracheids
b) xylem vessels
c) sieve tubes
d) companion cells
d) companion cells
Which blood vessel contains valves?
a) arteriole
b) blood capillary
c) renal artery
d) renal vein
d) renal vein
The organ that receives blood from two main blood vessels, then the blood comes out from it in one blood vessel is the ---
a) heart
b) liver
c) kidney
d) two lungs
b) liver
All the following are from the functions of stem's cortex, except the ---
a) supporting
b) transport
c) photosynthesis
d) storage
b) transport
Which of the following substances can be used to prevent the clotting of blood samples in the tubes, during carrying out the laboratory tests?
a) Thromboplastin
b) Prothrombin
c) Fibrinogen
d) Heparin
d) Heparin
Which blood vessel shows an increase in the concentration of glucose by time?
a) pulmonary artery
b) hepatic artery
c) hepatic vein
d) hepatic portal vein
d) hepatic portal vein
Which of the following is not from the factors that allow the ascent of water in the plant?
a) root pressure
b) cohesion force among water molecules
c) transpiration process
d) active transport process of food in the sieve tubes
d) active transport process of food in the sieve tubes
The number of RBCs increases in people who live in higher altitudes, due to the decrease of ---
a) CO2
b) O2
c) haemoglobin
d) iron
b) O2
All the following are from the components of lymph, except the -----
a) amino acids
b) antibodies
c) prothrombin
d) sodium salts
c) prothrombin
Which of the following statements doesn't agree with the nature of cellulose?
a) it is colloidal
b) it is supportive
c) its presence is limited in the walls of xylem vessels
d) it is a substance that allows the water and solutes passage
c) its presence is limited in the walls of xylem vessels
Which of the following is believed to be a reason for haemophilia (blood liquidity) disease? The ---
a) increasse of calcium percentage in blood
b) increase of vitamin K percentage in blood
c) increase of blood platelets percentage in blood
d) absence of one of the blood clotting factors from blood
d) absence of one of the blood clotting factors from blood
What is the result of increasing the cambium cells in a dicot stem?
a) increase the length of phloem
b) increase the cavity of primary xylem
c) decrease the support of the stem
d) increase the rate of transport
d) increase the rate of transport
Which of the following doesn't agree with keeping the water columns held continuously inside the xylem vessels of the plant? The ---
a) adhesion force among water molecules
b) entry of cellulose substance in its structure
c) entry of lignin substance in its structure
d) xylem vessels are devoid of bubbles
a) adhesion force among water molecules
Which of the following organs shares in the formation of about 46% of the blood?
a) liver
b) bone marrow
c) spleen
d) lymphatic system
b) bone marrow
Which of the heart chambers is responsible for receiving the lymph?
a) right atrium.
b) right ventricle
c) left atrium
d) left ventricle
a) right atrium.
What are the plants that are never exposed to exudation when their stem is cut close to the soil surface.
Pinus
The lowest value of the blood pressure in human is when ----
a) contracting the left atrium
b) relaxing the right atrium
c) the closure of bicuspid valve
d) the closure of tricuspid valve
a) contracting the left atrium
As the lignin deposition increases in xylem vessels, the higher ascent of the raw sap through it. Which property describes this relation?
a)osmotic pressure
b) capillarity theory
c) cohesion force
c) transpiration force
b) capillarity theory
Which of the following substances have the ability to absorb water, but they are insoluble in it?
a) cellulose & cutin
b) pectin & suberin
c) pectin & lignin
d) cellulose & suberin
c) pectin & lignin
The relaxation of the ventricle is synchronized with --
a) the closure of mitral valve
b) the opening of mitral valve
c) the closure of tricuspid valve
d) the opening of pulmonary valve
b) the opening of mitral valve
What is the result of the absence of pits from the xylem vessels in a plant leaf?
a) the transport of sucrose and amino acids stops
b) light and dark reactions stop
c) the transport of water and mineral salts to palisade layer increases
d) the rate of dark reactions increases
b) light and dark reactions stop
Which of the following works on increasing the active transport process in phloem?
a) decreasing the temperature & O2 deficiency
b) decreasing the temperature and increasing the O2
c) increasing of both the temperature and the concentration of O2
d) increasing the temperature and decreasing the O2
c) increasing of both the temperature and the concentration of O2
Which of the following statements doesn't agree with the valves?
a) they present at the connection of the heart with pulmonary and aorta arteries
b) they present at the connection of the heart with superior and inferior vena cava
c) they allow the passage of blood from the atrium to its opposite ventricle
d) they allow the passage of blood from two ventricles to inside the arteries in one direction
b) they present at the connection of the heart with superior and inferior vena cava
The organ which secretes digestive juices for all types of food is the ----
pancreas
Which of the following elements is/are not found in the food of aphid insect, when it is examined?
a) amino acids
b) fatty acids
c) sucrose
d) water
b) fatty acids
What is the value of blood pressure in the aorta artery?
a) 160 mmHg
b) 70 mmHg
c) 10 mmHg
d) 130 mmHg
d) 130 mmHg
Which of the following represents a tissue with undifferentiated cells?
a) Collenchyma of the cortex
b) xylem vessels
c) cambium cells
d) sieve tubes of the phloem
c) cambium cells