Latihan Un IPA Biologi Smp

The correct answer is 2 and 3. The statement "Ayam betina bertelur setiap hari" indicates the reproductive characteristic of laying eggs, which is a form of reproduction. The statement "Amoeba membelah diri pada saat tertentu" indicates the reproductive characteristic of asexual reproduction through cell division. Both of these statements demonstrate different forms of reproduction, making them the correct choices for the question.

When a stick is inserted next to a bitter melon plant, the plant's stem will move towards the stick and wrap around it. This is a common behavior known as thigmotropism, where plants respond to touch or physical contact by growing or bending towards the object. In this case, the bitter melon plant is exhibiting positive thigmotropism by moving closer to the stick and winding around it.

Membuat taman kota adalah usaha yang paling tepat untuk mengurangi pencemaran udara di perkotaan karena taman kota dapat berfungsi sebagai paru-paru hijau yang mampu menyerap polutan dan menghasilkan oksigen. Selain itu, taman kota juga dapat membantu menyejukkan suhu udara dan mengurangi polusi suara. Dengan adanya taman kota, masyarakat juga akan lebih tertarik untuk menghabiskan waktu di luar ruangan dan menggunakan kendaraan bermotor lebih sedikit, sehingga mengurangi emisi gas buang yang menyebabkan pencemaran udara.

The correct answer is 1, 2, and 3. The statement mentions dust filtration, temperature adjustment, and humidity control as treatments for the air entering the nasal cavity. These three actions are part of the nose's function to condition and prepare the air before it reaches the lungs.

The correct answer is 1, 4, and 5. This is because mammals are animals that reproduce viviparously, meaning they give birth to live young. They also have warm blood, which helps regulate their body temperature. Additionally, mammals have a body covering of either fur or hair, which helps to insulate and protect their bodies. The characteristic of nursing their young with milk is also unique to mammals. Therefore, options 1, 4, and 5 are the correct choices as they all describe characteristics of mammals.

When the human body is infected, the part of the blood that works is the white blood cells. White blood cells are responsible for fighting off infections and foreign substances in the body. They play a crucial role in the immune response and help to prevent the spread of infection. Red blood cells carry oxygen to the body's tissues, platelets are involved in blood clotting, and plasma is the liquid component of blood that carries nutrients and hormones. However, in the context of an infection, it is the white blood cells that are primarily involved in the body's defense mechanism.

The correct answer is 1, 3, and 5 because vaccines, penicillin, and insulin are all biotechnology products used in the field of health. Vaccines are used to prevent diseases by stimulating the immune system to produce antibodies. Penicillin is an antibiotic used to treat bacterial infections. Insulin is a hormone used to regulate blood sugar levels in people with diabetes.

The X-marked part in the leaf section is responsible for the exchange of gases, specifically allowing the entry and exit of air. This is because the process of photosynthesis requires the intake of carbon dioxide and the release of oxygen. The exchange of gases occurs through small openings called stomata, which are present in the X-marked region of the leaf.

The correct answer is "tempat proses fertilisasi dan tempat berkembangnya embrio". This is because the parts indicated by letters X and Y in the image are the fallopian tubes and the uterus, respectively. The fallopian tubes are responsible for the process of fertilization, where the sperm and egg meet, while the uterus is where the embryo develops and implants after fertilization.

Langkah 3 bertujuan untuk melarutkan klorofil pada daun. Hal ini dapat diketahui dari gambar yang menunjukkan daun yang telah dipanaskan dan direndam dalam alkohol. Alkohol berfungsi untuk melarutkan klorofil dalam daun, sehingga warna hijau dari klorofil akan hilang. Dengan demikian, tujuan dari langkah 3 adalah untuk melarutkan klorofil pada daun.

The correct answer is "menjilati dubur induknya." Termites rely on flagellates, a type of microorganism, to help them digest cellulose in their bodies. These flagellates live in the hindgut of the termite, specifically in the hindgut paunch. The termite then consumes its own feces, which contain the flagellates, in order to reintroduce them into its digestive system. By licking the anus of its parent, a young termite can acquire the necessary flagellates to aid in its own digestion.

The correct answer is II and IV. This is because the table shows that Amilase is an enzyme that converts maltose into glucose, and Tripsin is an enzyme that converts protein into amino acids. Therefore, the enzymes produced by the pancreas and their functions are Amilase (II) and Tripsin (IV).

The given question is asking for the percentage of the possibility of obtaining a starfruit plant that bears many fruits and has a sour taste. The traits for bearing many fruits are represented by the genotype BbMm, while the traits for a sour taste are represented by the genotype bbmm. When these two plants are crossed, the possible genotypes of the offspring are Bbmm and bbMm. Since both genotypes have the trait for a sour taste, the percentage of obtaining a starfruit plant with a sour taste is 100%. However, only one of the possible genotypes (Bbmm) has the trait for bearing many fruits, so the percentage of obtaining a starfruit plant that bears many fruits and has a sour taste is 25%.

The process that occurs in the distal tubule is augmentation. Augmentation refers to the process of increasing the concentration of a substance in the urine by actively transporting ions or molecules from the blood into the tubule. This process helps in regulating the final composition and concentration of urine before it is excreted from the body.

The given correct answer, "memperluas bidang tumbuhnya akar" (expanding the root growth area), is supported by the image of the staking technique shown. The shape of the cut area allows for the roots to spread outwards, providing more space for growth. This technique is commonly used to encourage the development of a strong and extensive root system in plants.