The space between the overtopped dichotomous branches was occupied by a sheet of which cells during evolution of megaphylls?

PMC Sample 2
Biology
Kingdom Plantae
Elimination Tool:

Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of special hyphal tips called

Deficient production of hormones by adrenal glands results in: .

NTS 2011
Biology
Coordination and Control
Elimination Tool:

During cellular respiration NADH2 produces:

NUMS 2014
Biology
Bioenergetics
Elimination Tool:

______ occurs because natural selection gives some alleles a better chance of survival than others:

PMC 2020
Biology
Evolution
Elimination Tool:

An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called:

Which of the following is NOT true for genes used in recombinant DNA technology?

NUMS 2019 Reconduct
Biology
Biotechnology
Elimination Tool:

Chlorosis refers to the lack of:

NUMS 2016
Biology
Nutrition
Elimination Tool:

_______ is the storage form of carbohydrate in animals and humans which is equivalent to the _____ in plants.

NUMS Mock 3
Biology
Biological Molecules

Some transgenic bacteria produce a dipeptide sweetener called

Gaseous exchange through the skin is known as ______ respiration.

Which one is a micromolecule?

Q.27 During which of the following levels of biological organization can natural selection occur?

The wings of the birds and forelegs of a horse are ______ structures.

NUMS Mock 3
Biology
Evolution

The actual remains or traces of organisms that lived in ancident geological times

Carbon dioxide is carried in the blood, mainly as:

NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:

Bryophtes are called amphiabians of plant world because

A bean seed contains all of the following except:

NTS 2012
Biology
Growth and Development
Elimination Tool:

Vocal cords, which help in voice production are two thin edged fibrous bands, present in:

NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:

Which of the following is not a basic unit of the cell?

NUMS 2016
Biology
Cell Structure and Function
Elimination Tool:

Leukaemia is associated with an increased number of _____ in blood.

NTS 2016 DUHS & JSMU
Biology
Growth and Development
Elimination Tool:

Lipids store double the amount of energy as compared to carbohydrates because of:

PMC 2020
Biology
Biological Molecules
Elimination Tool:

Tails can be regenerated in:

NUMS 2015
Biology
Growth and Development
Elimination Tool:

Booklungs serve the function of respiration in:

NUMS Mock 3
Biology
Gaseous Exchange

In case of neurons, post mitotic cell escapes cell cycle and remain in _______ phase whthout proliferating further

There are 3 stages of HIV infection, which sequence is correct

PMC Sample 1
Biology
Bio-diversity | Variety of Life
Elimination Tool:

Bacterial cells take up recombinant plasmids when they are treated with:

UHS 2015
Biology
Biotechnology
Elimination Tool:

Encircle the miss – match:

NTS 2016 SMBBMC
Biology
Bio-diversity | Variety of Life
Elimination Tool:

Parabronchi are open at ______ end/s

Pili are mainly found on certain species of:

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

Lock and Key Model for enzyme action propose by Emil Fischer suggests that:

NUMS Mock 4
Biology
Enzymes

Which type of sensory structures carrying the touch sensations are present in papillae extending into ridges of the fingertips?

Which of the following is an ovoviviparous organism?

PMC Sample 3
Biology
Kingdom Plantae
Elimination Tool:

When phenotype of a heterozygote is in between the phenotypes of both the homozygous parents, it is called:

NUMS 2016
Biology
Variation and Genetics
Elimination Tool:

What is the role of cholesterol in the cell membrane?

NUMS Mock 4
Biology
Cell Structure and Function

Which step causes activation of catalytic site of an enzyme?

Poliomyelitis normally affects the:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

Part of the amino acid sequences In normal and sickle cell hemoglobin are shown.

Normal haemoglobin

Thr – pro – glu – glu

Sickle cell haemoglobin

thr – pro – val – glu

mRNA codons for these amino acids are

Glutamine (glu) GAA GAG

Threonine (thr) ACU ACC

Proline (pro) CCU CCC

Valine (val) GUA GUG

Which transfer RNA molecule is Involved in the formation of this part of the sickle cell haemoglobin?

NTS 2016 DUHS & JSMU
Biology
Chromosomes and DNA
Elimination Tool:

The directional movement toward or away from the stimulus is called:

PMC 2020
Biology
Coordination and Control
Elimination Tool:

A pea plant with yellow seed was crossed to a plant having green seeds. What will happen in F1; if plants are true breeding

Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering:

The term bivalent means:

NUMS 2014
Biology
Cell Cycle
Elimination Tool:

Mountains of Koh Hindukush come under

Which one of the following is made up of radioactively labelled nucleotides?

UHS 2015
Biology
Biotechnology
Elimination Tool:

The total number of genes present in a particular population, at a particular time is called:

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

Study of a single population’s relationship to its environment is called

Read the passage below to answer the question:

Hemophilia is a disorder in which blood fails to clot. Saad, a male hemophiliac, marries Sara, a normal woman and together they have four children, two boys (Ahmed and Ali) and two girls (Alia and Ayesha). None of the children display the symptoms of Hemophilia. Ahmed, Ali, Ayesha, and Ali all marry normal individuals and have children. None of Ahmeds or Ali’s children, male or female, display symptoms of hemophilia, but the sons of Alia and Ayesha display symptoms of hemophilia while the daughters of Alia and Ayesha do not.

Which of the following individuals are heterozygous for hemophilia:

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

J. Seiler in 1914 discovered which type of sex determination in moths?

NUMS 2015
Biology
Variation and Genetics
Elimination Tool:

Lock and Key Model for enzyme action propose by Emil Fischer suggests that:

PMC 2020
Biology
Enzymes
Elimination Tool:

The most common example of members of the kingdom fungi is/are:

NUMS 2019 Reconduct
Biology
Kingdom Fungi
Elimination Tool:

Histones have abundance of amino acids

Which of the following cells does not have nucleus?

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

Feature of cancer cells in common?

Which of the following is the simplest form of pathogens causing diseases?

NTS 2018
Biology
Bio-diversity | Variety of Life
Elimination Tool:

Coniferous forests located at high altitude are called

In animals excess of nitrogen is excreted primarily in form of

The wings of birds and the forelegs of a horse are _____ structures.

NUMS 2016
Biology
Evolution
Elimination Tool:

Protoplasts are plant cells from which

Unicellular fungi which is non-hyphal is

They serve as a scaffold for formation of higher order chromatin structure:

NUMS Mock 2
Biology
Cell Structure and Function

Which of the following correctly explains the structure of myoglobin:

NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:

Which was the first virus to be successfully crystalized?

NUMS Mock 1
Biology
Bio-diversity | Variety of Life

Chest cavity is bounded by ribs and muscles on the sides, while the floor of chest cavity is called:

NUMS Mock 4
Biology
Gaseous Exchange

Viruses are ______ smaller than bacteria

What CANNOT be true for a man having B+ve blood group?

NUMS 2019 Reconduct
Biology
Variation and Genetics
Elimination Tool:

NAD is an example of:

NUMS Mock 1
Biology
Biological Molecules

Normal resting membrane potential of a neuron is

Hepatic and Pancreatic secretions are also stimulated by a hormone called:

NUMS 2016
Biology
Coordination and Control
Elimination Tool:

The only aquatic arthropods:

PMC Sample 1
Biology
Kingdom Animalia
Elimination Tool:

There existed two varieties of female freshwater Mollusks in which some were streamlined and some had a high bulge. Over the generations, male freshwater Mollusks learned that high bulge favors more production of offspring. So they started preferring to mate with females having high bulge as compared to streamlined. Will this affect Hardy Weinberg Equilibrium in the population?

NUMS Mock 2
Biology
Evolution

All of the followings are the effects of red light on plant, EXCEPT:

NTS 2016 SMBBMC
Biology
Growth and Development
Elimination Tool:

Following group is the example of acoelomates:

NUMS Mock 1
Biology
Kingdom Animalia

The type of gene interaction in which the effect caused by a gene at one locus interfere with the effect caused by another gene at another locus is known as:

NUMS Mock 1
Biology
Variation and Genetics

Important point/s of Lamarck’s theory

The male reproductive parts of the flower are called

UHS 2012
Biology
Kingdom Plantae
Elimination Tool:

Which of the following blood vessels have the highest pressure of blood?

NUMS 2020
Biology
Transport
Elimination Tool:

Thick, waxy & leathery cuticle around leaves is present in which of the following?

PMC Sample 3
Biology
Kingdom Plantae
Elimination Tool:

If we cross round yellow seeded plant with green wrinkled seeded plants, what will be phenotypic ratio at F2 generation?

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

It is the smallest eukaryote:

NUMS Mock 2
Biology
Kingdom Protista

Hemoglobin carries more oxygen than plasma by:

NUMS Mock 1
Biology
Gaseous Exchange

The feeding stage of slime mold is a

UHS 2010
Biology
Kingdom Protista
Elimination Tool:

Fibers of the extracellular matrix are attached to ______ in the plasma membrane:

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

Which type of mucosa cells secrete pepsinogen?

NUMS 2014
Biology
Nutrition
Elimination Tool:

In a hot summer after noon, if your body’s Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of

In roots, the apoplast pathway of water is disrupted when water reaches:

PMC 2020
Biology
Transport
Elimination Tool:

Liposomes are:

PMC 2021 Tested
Biology
Biotechnology
Elimination Tool:

Among the following, which cellular organelle contains circular DNA, similar to those found in bacteria?

NUMS Mock 1
Biology
Cell Structure and Function

Detoxification of drugs is the function of _____ in a cell.

NUMS 2016
Biology
Cell Structure and Function
Elimination Tool: