| 1301 |
Brief heating of vegetables before freezing or drying mainly serves to: |
Agriculture
Preservation of fruits and vegetables |
Easy |
| 1302 |
Why is guava preferred for making jelly? |
Agriculture
Preservation of fruits and vegetables |
Medium |
| 1303 |
High sugar concentration preserves jam mainly by: |
Agriculture
Preservation of fruits and vegetables |
Medium |
| 1304 |
While making jam, a cook finds the boiling product at about 68.5% total soluble solids and it falls from the … |
Agriculture
Preservation of fruits and vegetables |
Hard |
| 1305 |
Which idea is most closely associated with Lamarck? |
Anthropology
Theories of evolution |
Easy |
| 1306 |
Darwin's main book explaining natural selection was published in which year? |
Anthropology
Theories of evolution |
Easy |
| 1307 |
Weismann cut off the tails of mice for many generations, yet the offspring were always born with normal tails… |
Anthropology
Theories of evolution |
Medium |
| 1308 |
What did Neo-Darwinism add to Darwin's original theory? |
Anthropology
Theories of evolution |
Medium |
| 1309 |
In a population of beetles, dark individuals are eaten less by birds on dark tree bark and leave more offspri… |
Anthropology
Theories of evolution |
Hard |
| 1310 |
Which feature is characteristic of almost all primates? |
Anthropology
Living primates |
Easy |
| 1311 |
Which living primates are the closest relatives of humans? |
Anthropology
Living primates |
Easy |
| 1312 |
A primate from South America has a broad nose with sideways-facing nostrils and uses its tail to hang from br… |
Anthropology
Living primates |
Medium |
| 1313 |
The hoolock gibbon found in north-east India differs from the rhesus macaque mainly because the gibbon |
Anthropology
Living primates |
Medium |
| 1314 |
Which combination of traits is best explained as an adaptation to life in trees? |
Anthropology
Living primates |
Hard |
| 1315 |
Which hominin is called "handy man" and linked with the earliest stone tools? |
Anthropology
Hominid evolution |
Easy |
| 1316 |
Java Man and Peking Man are fossils of which species? |
Anthropology
Hominid evolution |
Easy |
| 1317 |
The fossil "Lucy" shows a small, ape-sized brain together with a pelvis and leg bones adapted for walking upr… |
Anthropology
Hominid evolution |
Medium |
| 1318 |
A fossil hominin from Ice Age Europe has a stocky body, a large brain of about 1500 cc, Mousterian tools and … |
Anthropology
Hominid evolution |
Medium |
| 1319 |
Arrange the following in order of increasing average brain size: Homo erectus, Australopithecus, Homo habilis. |
Anthropology
Hominid evolution |
Hard |
| 1320 |
Which pigment is mainly responsible for differences in human skin colour? |
Anthropology
Human variation |
Easy |
| 1321 |
Bergmann's rule states that within a widely spread warm-blooded species, populations in colder regions tend t… |
Anthropology
Human variation |
Easy |
| 1322 |
Why is darker skin common among populations that have lived for many generations near the equator? |
Anthropology
Human variation |
Medium |
| 1323 |
A plains-dwelling visitor to a high mountain region breathes faster and produces more red blood cells within … |
Anthropology
Human variation |
Medium |
| 1324 |
A population of herders with a long history of drinking animal milk shows a high frequency of adults who can … |
Anthropology
Human variation |
Hard |
| 1325 |
Which law states that the two alleles of a gene separate into different gametes? |
Anthropology
Human genetics |
Easy |
| 1326 |
Haemophilia is much more common in men than in women because it is |
Anthropology
Human genetics |
Easy |
| 1327 |
Two parents with normal pigmentation have a child with albinism, an autosomal recessive trait. What is the ch… |
Anthropology
Human genetics |
Medium |
| 1328 |
Beard growth is controlled by genes present in both sexes but is normally expressed only in males. Such a tra… |
Anthropology
Human genetics |
Medium |
| 1329 |
A woman who is a carrier of red–green colour blindness marries a man with normal vision. What proportion of t… |
Anthropology
Human genetics |
Hard |
| 1330 |
How many chromosomes are present in a normal human body (somatic) cell? |
Anthropology
Chromosomes and their aberrations |
Easy |
| 1331 |
Down syndrome is caused by |
Anthropology
Chromosomes and their aberrations |
Easy |
| 1332 |
A karyotype shows 47 chromosomes with the sex chromosomes XXY. The person is most likely to have |
Anthropology
Chromosomes and their aberrations |
Medium |
| 1333 |
A segment of chromosome breaks off and reattaches to a different, non-homologous chromosome. This structural … |
Anthropology
Chromosomes and their aberrations |
Medium |
| 1334 |
If the two X chromosomes fail to separate during egg formation, an egg may carry no X at all. If this egg is … |
Anthropology
Chromosomes and their aberrations |
Hard |
| 1335 |
Which force of evolution is the ultimate source of all new genetic variation? |
Anthropology
Forces of evolution |
Easy |
| 1336 |
Movement of genes from one population into another through migration and intermarriage is called |
Anthropology
Forces of evolution |
Easy |
| 1337 |
A small group of families settles on an isolated island and, by chance, one of them carries a rare recessive … |
Anthropology
Forces of evolution |
Medium |
| 1338 |
Why does the sickle-cell allele remain common in some malaria-affected regions even though homozygotes suffer… |
Anthropology
Forces of evolution |
Medium |
| 1339 |
In a population in Hardy–Weinberg equilibrium, 16% of people show a recessive trait. What is the frequency of… |
Anthropology
Forces of evolution |
Hard |
| 1340 |
Who discovered the ABO blood group system? |
Anthropology
Genetic markers |
Easy |
| 1341 |
Which type of DNA is passed on only through the mother and is used to trace maternal ancestry? |
Anthropology
Genetic markers |
Easy |
| 1342 |
The relationship between alleles IA and IB, where both are fully expressed in a person of blood group AB, is … |
Anthropology
Genetic markers |
Medium |
| 1343 |
A father has blood group A and a mother has blood group B. Their first child has blood group O. What are the … |
Anthropology
Genetic markers |
Medium |
| 1344 |
A couple both of blood group AB have a child. Which blood group is NOT possible for the child? |
Anthropology
Genetic markers |
Hard |
| 1345 |
Microliths are most characteristic of which cultural period? |
Anthropology
Stone Age cultures |
Easy |
| 1346 |
Who used the term "Neolithic Revolution" for the change to farming and settled life? |
Anthropology
Stone Age cultures |
Easy |
| 1347 |
At a site, archaeologists find polished stone axes, pottery, remains of domesticated cattle and charred grain… |
Anthropology
Stone Age cultures |
Medium |
| 1348 |
Which change in way of life best distinguishes the Neolithic from the Palaeolithic? |
Anthropology
Stone Age cultures |
Medium |
| 1349 |
Why did microlithic tools become widespread at the end of the Ice Age? |
Anthropology
Stone Age cultures |
Hard |
| 1350 |
A tool flaked on both faces to form a pear-shaped outline with a pointed tip is called a |
Anthropology
Tool typology and technology |
Easy |